Upgrade from Qt5 to Qt6 for more modern UI (#7373)

* Use Qt 6

* Fixed some Qt6 deps

* Fixed minor compile issues for Qt6

* Drop Debian 11 support (no Qt6 lib)

* Move Debian to top

* Delete expensive to maintain code that yeilds low UX gain

* Unpack all values

* Use %lld instead of %u

* Minor UI improvements

* Add deps for Fedora, OpenSUSE, and Arch

* Fixed CMake lint issue

* Use package name from build.opensuse.org

* Used `zypper search` to find correct package names

scripts/github_env.py

@@ -23,7 +23,7 @@ def main():
 
     if args.set_qt_version:
         config = Config()
-        _qt_mirror, qt_version, _qt_install_dir = config.get_qt_config()
+        _, qt_version, _, _ = config.get_qt_config()
         github.set_env(qt_version_key, qt_version)
     else:
         raise RuntimeError("No option selected")