Location Button

[rolson]

Adds a button to the toolkit that allows a user to show their current location.

The view can be positioned anywhere, with any background. This example uses a "regular material background" in a rounded rectangle.

• Tap once, location display starts, if using a system location datasource, it will request authorization, while starting a progress indicator is shown
• Starts in auto pan mode recenter
• Long press to get a context menu
• Switch to navigation mode, any autopan mode, or turn the datasource off
• If the location display fails to start, an warning signal is shown, tapping again will try to start the datasource again
• Panning turns autopan off, tapping the button again will turn on the last autopan mode that the user had selected

[rolson]

Next sprint x I can write some tests for this and then we can release it PI1 of 2025.

[rolson]

cc @dg0yal