Adapt to modern Qt6 QML import path conventions

Let's adopt QTP0001 and move all per-application resources already under
qrc:/qt/qml/AsteroidApp/.

Author: JamiKettunen

cmake/AsteroidCMakeSettings.cmake

@@ -34,5 +34,6 @@ if (NOT ASTEROID_SKIP_BUILD_SETTINGS)
 	set(INSTALL_QML_IMPORT_DIR "${CMAKE_INSTALL_FULL_LIBDIR}/qt${QT_VERSION_MAJOR}/qml"
 		CACHE PATH "Custom QML import installation directory")
 
-	set(QT_MIN_VERSION "5.12.0")
+	# Ensure availability of QTP0001 (https://doc.qt.io/qt-6/qt-cmake-policy-qtp0001.html)
+	set(QT_MIN_VERSION "6.5.0")
 endif()

src/app/AsteroidAppConfig.cmake.in

@@ -7,3 +7,5 @@ set(ASTEROID_MODULE_PATH "@PACKAGE_ASTEROID_MODULES_INSTALL_DIR@")
 
 include("${CMAKE_CURRENT_LIST_DIR}/AsteroidAppTargets.cmake")
 @PACKAGE_INCLUDE_QCHTARGETS@
+
+qt_policy(SET QTP0001 NEW)

src/app/asteroidapp.cpp

@@ -108,7 +108,7 @@ namespace AsteroidApp {
     {
         QScopedPointer<QGuiApplication> app(AsteroidApp::application(argc, argv));
         QScopedPointer<QQuickView> view(AsteroidApp::createView());
-        view->setSource(QUrl("qrc:/main.qml"));
+        view->setSource(QUrl("qrc:/qt/qml/AsteroidApp/main.qml"));
         view->resize(app->primaryScreen()->size());
         view->show();
         return app->exec();

src/app/asteroidapp.h

@@ -43,7 +43,7 @@ namespace AsteroidApp {
     ASTEROIDAPP_EXPORT QGuiApplication *application(int &argc, char **argv);
     ASTEROIDAPP_EXPORT QQuickView *createView();
 
-    // Very simple interface: Uses "qrc:/main.qml" as QML entry point
+    // Very simple interface: Uses "qrc:/qt/qml/AsteroidApp/main.qml" as QML entry point
     ASTEROIDAPP_EXPORT int main(int &argc, char **argv);
 };