feat(StatusPopupMenu): add support for letter identicons, identicons and images

This extends the popup menu to accept image or icon configurations a la `StatusIconSettings`
and `StatusImageSettings` in menu items, as well as nested menus.

Usage:

```qml
StatusPopupMenu {

    StatusMenuItem {
        text: "Custom Image icon"
        image.source: // image source
    }

    StatusMenuItem {
        text: "Custom identicon icon"
        image.source: // identicon source
        image.isIdenticon: true
    }

    StatusMenuItem {
        text: "Custom letter identicon"
        iconSettings.isLetterIdenticon: true
        iconSettings.background.color: "red"
    }
}
```

Few things to note:

- Because `StatusMenuItem` is an `Action` type, we can't extend its `icon` property,
  so we have to introduce our own (`iconSettings`) which can be of type `StatusIconSettings`
- Where possible, `StatusPopupMenu` will prefer `iconSettings.[...]` over `icon.[...]`,
  which means, both would work: `icon.name` and `iconSettings.name`.
  This is for consistency's sake. Consumers can switch completely to `iconSettings` if desired.
- When `isLetterIdenticon` is true, `iconSettings.background.color` must be set, similar
  to how it work in any other StatusQ component that makes use of this configuration type.

Closes #263

ui/StatusQ/sandbox/StatusPopupMenuPage.qml

@@ -22,6 +22,13 @@ GridLayout {
         onClicked: complexMenu.popup()
     }
 
+
+    StatusButton {
+        text: "Menu with custom images and icons"
+        onClicked: customMenu.popup()
+    }
+
+
     StatusPopupMenu {
         id: simpleMenu
         StatusMenuItem { 
@@ -40,32 +47,103 @@ GridLayout {
     StatusPopupMenu {
         id: complexMenu
         subMenuItemIcons: ['info']
+
         StatusMenuItem { 
             text: "One" 
-            icon.name: "info"
+            iconSettings.name: "info"
         }
 
         StatusMenuSeparator {}
 
         StatusMenuItem { 
             text: "Two"
-            icon.name: "info"
+            iconSettings.name: "info"
         }
 
         StatusMenuItem { 
             text: "Three"
-            icon.name: "info"
+            iconSettings.name: "info"
         }
 
         StatusPopupMenu {
             title: "Four"
             StatusMenuItem { 
                 text: "One"
-                icon.name: "info"
+                iconSettings.name: "info"
             }
             StatusMenuItem { 
                 text: "Three"
-                icon.name: "info"
+                iconSettings.name: "info"
+            }
+        }
+    }
+
+    StatusPopupMenu {
+        id: customMenu
+
+        subMenuItemIcons: [
+            "chat", 
+            { 
+                source: "https://pbs.twimg.com/profile_images/1369221718338895873/T_5fny6o_400x400.jpg" 
+            },
+            { 
+                isLetterIdenticon: true, 
+                color: "red" 
+            }
+        ]
+
+        StatusMenuItem {
+            text: "Anywhere"
+        }
+
+        StatusMenuSeparator {}
+
+        StatusPopupMenu {
+            title: "Chat" 
+
+            StatusMenuItem { 
+                text: "vitalik.eth"
+                image.source: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAAAlklEQVR4nOzW0QmDQBAG4SSkl7SUQlJGCrElq9F3QdjjVhh/5nv3cFhY9vUIYQiNITSG0Bh
+CExPynn1gWf9bx498P7/nzPcxEzGExhBdJGYihtAYQlO+tUZvqrPbqeudo5iJGEJjCE15a3VtodH3q2ImYgiNITTlTdG1nUZ5a92VITQxITFiJmIIjSE0htAYQrMHAAD//+wwFVpz+yqXAAAAAElFTkSuQmCC"
+                image.isIdenticon: true
+            }
+
+            StatusMenuItem { 
+                text: "Pascal"
+                image.source: "https://pbs.twimg.com/profile_images/1369221718338895873/T_5fny6o_400x400.jpg"
+            }
+        }
+
+        StatusPopupMenu {
+            title: "Cryptokitties"
+
+            StatusMenuItem { 
+                text: "welcome" 
+                iconSettings.name: "channel"
+                iconSettings.color: Theme.palette.directColor1
+            }
+            StatusMenuItem { 
+                text: "support" 
+                iconSettings.name: "channel"
+                iconSettings.color: Theme.palette.directColor1
+            }
+
+            StatusMenuHeadline { text: "Public" }
+
+            StatusMenuItem { 
+                text: "news" 
+                iconSettings.name: "channel"
+                iconSettings.color: Theme.palette.directColor1
+            }
+        }
+
+        StatusPopupMenu {
+            title: "Another community"
+
+            StatusMenuItem { 
+                text: "welcome" 
+                iconSettings.isLetterIdenticon: true
+                iconSettings.background.color: "red"
             }
         }
     }

ui/StatusQ/src/StatusQ/Popups/StatusMenuItem.qml

@@ -9,7 +9,17 @@ Action {
         Normal,
         Danger
     }
-
+    icon.color: "transparent"
     property int type: StatusMenuItem.Type.Normal
     property real iconRotation: 0
+    property StatusImageSettings image: StatusImageSettings {
+        height: 16
+        width: 16
+        isIdenticon: false
+    }
+    property StatusIconSettings iconSettings: StatusIconSettings {
+        isLetterIdenticon: false
+        background: StatusIconBackgroundSettings {}
+        color: "transparent"
+    }
 }

ui/StatusQ/src/StatusQ/Popups/StatusPopupMenu.qml

@@ -4,6 +4,7 @@ import QtGraphicalEffects 1.13
 
 import StatusQ.Core 0.1
 import StatusQ.Core.Theme 0.1
+import StatusQ.Components 0.1
 import StatusQ.Popups 0.1
 
 
@@ -54,13 +55,27 @@ Menu {
                 implicitHeight: 24
                 StatusIcon {
                     anchors.centerIn: parent
-                    width: !!statusPopupMenuItem.action.icon.width ?
-                      statusPopupMenuItem.action.icon.width : 18
+                    width: {
+                        let width = statusPopupMenuItem.action.icon.width ||
+                            statusPopupMenuItem.action.iconSettings.width
+
+                        return !!width ? width : 18
+                    }
                     rotation: statusPopupMenuItem.action.iconRotation
-                    icon: statusPopupMenuItem.subMenu ?
-                        statusPopupMenu.subMenuItemIcons[statusPopupMenuItem.subMenuIndex] :
-                        statusPopupMenuItem.action.icon.name
+                    icon: {
+                        if (statusPopupMenuItem.subMenu) {
+                            return statusPopupMenu.subMenuItemIcons[statusPopupMenuItem.subMenuIndex]
+                        }
+                        return statusPopupMenuItem.action.icon.name ||
+                          statusPopupMenuItem.action.iconSettings.name
+                    }   
                     color: {
+                        let c = statusPopupMenuItem.action.iconSettings.color ||
+                            statusPopupMenuItem.action.icon.color
+                          
+                        if (!Qt.colorEqual(c, "transparent")) {
+                            return c
+                        }
                         switch (statusPopupMenuItem.action.type) {
                             case StatusMenuItem.Type.Danger:
                               return Theme.palette.dangerColor1
@@ -73,13 +88,66 @@ Menu {
             }
         }
 
+        Component {
+            id: statusLetterIdenticonCmp
+            Item {
+                implicitWidth: 24
+                implicitHeight: 24
+
+                StatusLetterIdenticon {
+                    anchors.centerIn: parent
+                    width: 16
+                    height: 16
+                    color: {
+                        let subMenuItemIcon = statusPopupMenu.subMenuItemIcons[statusPopupMenuItem.subMenuIndex]
+                        return subMenuItemIcon && subMenuItemIcon.color ? subMenuItemIcon.color : statusPopupMenuItem.action.iconSettings.background.color
+                    }
+                    name: statusPopupMenuItem.text
+                    letterSize: 11
+                }
+            }
+        }
+
+        Component {
+            id: statusRoundImageCmp
+
+            Item {
+                implicitWidth: 24
+                implicitHeight: 24
+                StatusRoundedImage {
+                    anchors.centerIn: parent
+                    width: statusPopupMenuItem.action.image.width
+                    height: statusPopupMenuItem.action.image.height
+                    image.source: statusPopupMenuItem.subMenu ?
+                        statusPopupMenu.subMenuItemIcons[statusPopupMenuItem.subMenuIndex].source :
+                        statusPopupMenuItem.action.image.source
+                    border.width: (statusPopupMenuItem.subMenu && statusPopupMenu.subMenuItemIcons[statusPopupMenuItem.subMenuIndex].isIdenticon) || 
+                        statusPopupMenuItem.action.image.isIdenticon ? 1 : 0
+                    border.color: Theme.palette.directColor7
+                }
+            }
+        }
+
         indicator: Loader {
-            sourceComponent: indicatorComponent
+            sourceComponent: {
+                let subMenuItemIcon = statusPopupMenu.subMenuItemIcons[parent.subMenuIndex]
+                
+                if ((parent.subMenu && subMenuItemIcon && subMenuItemIcon.source) || !!statusPopupMenuItem.action.image.source.toString()) {
+                    return statusRoundImageCmp
+                }
+
+                return (parent.subMenu && subMenuItemIcon && subMenuItemIcon.isLetterIdenticon) || 
+                    statusPopupMenuItem.action.iconSettings.isLetterIdenticon ? 
+                    statusLetterIdenticonCmp : indicatorComponent
+            }
             anchors.verticalCenter: parent.verticalCenter
             anchors.left: parent.left
             anchors.leftMargin: 8
             active: (parent.subMenu && !!statusPopupMenu.subMenuItemIcons[parent.subMenuIndex] ||
-                !!statusPopupMenuItem.action.icon.name) &&
+                (!!statusPopupMenuItem.action.icon.name ||
+                !!statusPopupMenuItem.action.iconSettings.name) ||
+                !!statusPopupMenuItem.action.iconSettings.isLetterIdenticon ||
+                !!statusPopupMenuItem.action.image.source.toString()) &&
                 statusPopupMenuItem.action.enabled
         }
 
@@ -163,5 +231,4 @@ Menu {
             }
         }
     }
-
 }