chore(StatusQ): make StatusLoadingIndicator use Animator

Animator based animations can animate on scene graph's rendering thread
even when the UI thread is blocked.

ui/StatusQ/src/StatusQ/Components/StatusLoadingIndicator.qml

@@ -2,17 +2,16 @@ import QtQuick 2.13
 import StatusQ.Core 0.1
 
 StatusIcon {
-    id: statusIcon
+    id: root
     icon: "loading"
     height: 17
     width: 17
-    RotationAnimation {
-        target: statusIcon;
-        from: 0;
-        to: 360;
+    RotationAnimator {
+        target: root
+        from: 0
+        to: 360
         duration: 1200
         running: visible
         loops: Animation.Infinite
     }
 }
-

ui/StatusQ/src/StatusQ/Core/StatusIcon.qml

@@ -2,10 +2,11 @@ import QtQuick 2.13
 import QtGraphicalEffects 1.13
 
 Image {
+    id: root
+
     property string icon: ""
     property color color: "transparent"
 
-    id: statusIcon
     width: 24
     height: 24
     // SVGs must have sourceSize, PNGs not; otherwise blurry
@@ -24,10 +25,13 @@ Image {
         }
     }
 
-    layer.smooth: true
-    layer.format: ShaderEffectSource.RGBA
-    layer.enabled: !Qt.colorEqual(statusIcon.color, "transparent")
-    layer.effect: ColorOverlay {
-        color: statusIcon.color
+    Loader {
+        anchors.fill: root
+        active: !Qt.colorEqual(root.color, "transparent")
+        sourceComponent: ColorOverlay {
+            source: root
+            color: root.color
+            smooth: true
+        }
     }
 }