Add manual mal control on live location sharing page

When sharing your live location via Dawarich, the map view automatically zooms in with every position update. This constant auto-zoom makes it difficult to maintain an overview of the map, especially when viewing the shared location page for longer periods or when trying to follow movement on a broader scale.

Each new position update triggers an automatic zoom-in action

No option to disable this auto-zoom behavior
No way to set a fixed zoom level manually
No distinction between "follow mode" (auto-centering and zooming on the moving marker) and a static map