Migrate qopenhd from qt 5 to 6

[pilotnbr1]

Qt 5.15 is getting old and now looking into migrating qopenhd to Qt 6.X

PROS:

• dependecy future proofing
• get qt shader tools. But no present plans to use them

CONS:

• more work... some of it will be platform specific. Nobody currently debugs all platforms like Stephen
• mapbox-gl is not a supported plugin. MaplibreGL looks to be the new solution

Current errors seen while upgrading:

1. Mapbox plugin related
2. OSM plugin for maps error probably related to Mapbox
3. QT x11extras (https://doc.qt.io/qt-6/extras-changes-qt6.html) solution will be somewhat platform dependant
4. QT Location - no plans to port.. Must switch to QT positioning
5. QT gamepads depreciated. probably not a big deal as we use 3rd part qt joystick But need to remove gamepad code
6. QT android extras will probably need some attention for android
7. QT openGL will need attention most likely
8. QT speech supposedly being ported in qt 6.4
9. Qt Windows Extras might need attention for windows