chore: update app name and icon

ui/main.qml

@@ -20,13 +20,13 @@ Rectangle {
         width: 204
         height: 173
         anchors.top: parent.top
-        source: "content/images/dvicon.png"
+        source: "content/images/appicon.png"
         anchors.horizontalCenter: parent.horizontalCenter
         fillMode: Image.PreserveAspectFit
 
         Text {
             id: qdvLabel
-            text: qsTr("Qt Design Viewer for Android")
+            text: qsTr("Qt UI Viewer for Android")
             anchors.top: parent.bottom
             font.pixelSize: 12
             anchors.topMargin: -22

ui/resources.qrc

 <RCC>
     <qresource prefix="/">
-        <file>content/images/dvicon.png</file>
+        <file>content/images/appicon.png</file>
         <file>main.qml</file>
         <file>HomePage.qml</file>
         <file>Logs.qml</file>