Refactor map integration to use MapLibre instead of Mapbox

- Removed Mapbox dependencies and related configurations from settings.gradle.kts and build.gradle.kts.
- Implemented MapViewModel to manage zone data and loading state.
- Updated MapScreen to render zones using MapLibre, including loading indicators and error handling.
- Added GeoJSON generation for zone data to be displayed on the map.
- Updated libraries version to use MapLibre Compose.

settings.gradle.kts

@@ -17,16 +17,6 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
-        maven {
-            url = uri("https://api.mapbox.com/downloads/v2/releases/maven")
-            credentials.username = "mapbox"
-            credentials.password = providers.gradleProperty("MAPBOX_DOWNLOADS_TOKEN")
-                .orElse(providers.environmentVariable("MAPBOX_DOWNLOADS_TOKEN"))
-                .getOrElse("")
-            authentication {
-                create<BasicAuthentication>("basic")
-            }
-        }
     }
 }