Qt6 (#669)

* update qt6 upgrade progress

* add flawed addition for QRenderTarget and link needed libs

* update to better logging format

* move many assets and qml files into qrc

* get rid of deprecation messages

* remove additional deprecation notices

* make Qt6 finally render on desktop with some progress on vr

* initialize QRhi with QQuickRenderControl

* use default values to stop SegFaults

* fix compilation on windows

* add windows files for aiding in running exe

* fix formatting of testing qt.conf

* first attempt on using textures instead of files in AudioTabController

* Fix public/private access issue

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Co-authored-by: RTUnreal <unreal@rtinf.net>

cmake/CPackConfig.cmake

@@ -0,0 +1,8 @@
+set(CPACK_PACKAGE_NAME "${PROJECT_NAME}")
+set(CPACK_PACKAGE_VENDOR "OVRAS Team")
+
+# NSIS installer config
+set(CPACK_PACKAGE_ICON "${CMAKE_SOURCE_DIR}/src/res/img/icons/advicon256px.ico")
+set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/LICENSE")
+set(CPACK_NSIS_PACKAGE_NAME "${PROJECT_NAME} ${CMAKE_VERSION}")
+set(CPACK_NSIS_MODIFY_PATH OFF)