McuSupport: Use module version for import in wizard generated code

Allows Qt Creator to work with the qml document, e.g. open it in Qt
Quick Designer. Qul does not require an import version but accepts one.

Change-Id: Idd52bc855b31cf7d25a8a6b524f629e2904bda17
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

src/plugins/mcusupport/wizards/application/main.qml.tpl

@@ -1,5 +1,5 @@
 pragma main;
-import QtQuick
+import QtQuick 2.0
 
 Rectangle {
     width: 480
@@ -9,5 +9,6 @@ Rectangle {
         anchors.centerIn: parent
         color: "salmon"
         text: "Hello World!"
+        font.pixelSize: 14
     }
 }