feat(StatusBanner): Added component documentation (#628)

Added component documentation.

Part of #620

ui/StatusQ/src/StatusQ/Controls/StatusBanner.qml

@@ -3,13 +3,61 @@ import QtQuick 2.14
 import StatusQ.Core 0.1
 import StatusQ.Core.Theme 0.1
 
+/*!
+   \qmltype StatusBanner
+   \inherits Column
+   \inqmlmodule StatusQ.Controls
+   \since StatusQ.Controls 0.1
+   \brief It displays a banner with a custom text, size and type.  Inherits \l{https://doc.qt.io/qt-5/qml-qtquick-column.html}{Column}.
+
+   The \c StatusBanner displays a banner with a custom text, size and type (Info, Danger, Success or Warning).
+
+   Example of how the control looks like:
+   \image status_banner.png
+
+   Example of how to use it:
+
+   \qml
+        StatusBanner {
+            width: parent.width
+            visible: popup.userIsBlocked
+            type: StatusBanner.Type.Danger
+            statusText: qsTr("Blocked")
+        }
+   \endqml
+
+   For a list of components available see StatusQ.
+*/
 Column {
     id: statusBanner
-    width: parent.width
 
+    /*!
+       \qmlproperty string StatusBanner::statusText
+       This property holds the text the banner will display.
+    */
     property string statusText
+    /*!
+       \qmlproperty string StatusBanner::type
+       This property holds type of banner. Possible values are:
+       \qml
+        enum Type {
+            Info, // 0
+            Danger, // 1
+            Success, // 2
+            Warning // 3
+        }
+        \endqml
+    */
     property int type: StatusBanner.Type.Info
+    /*!
+       \qmlproperty string StatusBanner::textPixels
+       This property holds the pixels size of the text inside the banner.
+    */
     property int textPixels: 15
+    /*!
+       \qmlproperty string StatusBanner::statusBannerHeight
+       This property holds the height of the banner rectangle.
+    */
     property int statusBannerHeight: 38
 
     // "private" properties
@@ -27,6 +75,8 @@ Column {
         Warning // 3
     }    
 
+    width: parent.width
+
     // Component definition
     Rectangle {
         id: topDiv