Migrate to Maplibre-Compose

[westnordost]

MapLibre Compose is a library to directly use MapLibre in Compose Multiplatform. It is currently not stable yet, but it is in very active in development, so it may be soon ready for use.

Currently, we use MapLibre for Android.

As far as I've followed development, the following things are still missing from the library that we require, which is why it is currently marked as blocked:

• downloading tiles for offline use

Contribution to the linked library is much appreciated. Ecosystem: MapLibre, Android, iOS, JavaScript, Compose Multiplatform, Kotlin.