Port Qt Location to Qt 6

What is the benefit? Why is this valuable?

Qt Location has been part of Qt 5 and not been part of the essential and most-used module list for migration to Qt 6.
Over time, we received a multitude of customers and OSS projects demanding reviving Qt Location.
After several discussions with customers the scope could be narrowed down. For more details, follow this spreadsheet:

Qt6Location_CustomerFeedback.xlsx

​

What are common use cases?

• Capability to render map tiles onto a QML scene
• Gesture operation (pinch/zoom/move/…)
• Render custom items on top of the map

​

Technical information

Preferably the rendering should happen on top of RHI instead of a hard dependency to OpenGL.

Backends to be supported:

• OSM

https://bugreports.qt.io/browse/QTBUG-72239