Add GPS tracking functionality with location services integration

- Introduced TrackingRepository to manage activity tracking state and GPS points.
- Implemented LocationTrackingService for foreground GPS tracking using FusedLocationProviderClient.
- Created data models GpsPoint and TrackingState to represent tracking data.
- Enhanced TrackActivityScreen with UI for selecting activity type and displaying tracking status.
- Added LocationUtils for geospatial calculations, including distance tracking and loop closure detection.
- Updated build.gradle.kts to include Google Play Services Location dependency.

gradle/libs.versions.toml

@@ -30,6 +30,9 @@ retrofitKotlinxSerialization = "1.0.0"
 # MapLibre
 maplibreCompose = "0.12.1"
 
+# Google Play Services
+playServicesLocation = "21.3.0"
+
 # Firebase
 firebaseBom = "33.7.0"
 
@@ -88,6 +91,9 @@ retrofit-kotlinx-serialization = { group = "com.jakewharton.retrofit", name = "r
 # MapLibre
 maplibre-compose = { module = "org.maplibre.compose:maplibre-compose", version.ref = "maplibreCompose" }
 
+# Google Play Services
+play-services-location = { group = "com.google.android.gms", name = "play-services-location", version.ref = "playServicesLocation" }
+
 # Firebase
 firebase-bom = { group = "com.google.firebase", name = "firebase-bom", version.ref = "firebaseBom" }
 firebase-messaging = { group = "com.google.firebase", name = "firebase-messaging-ktx" }