feat(location): implement location search provider toggle

Add config properties for locationSearchProvider (osm/google_maps) and
googleMapsApiKey to BetterLocationConfig. Modify ChooseLocationDialog
to switch between OpenStreetMap (MAPNIK) and Google Maps tile sources
based on user preference.

- Add locationSearchProvider unique config property
- Add googleMapsApiKey string config property (SENSITIVE flag)
- Add XYTileSource for Google Maps tiles in AlertDialogs
- Pass locationSearchProvider from BetterLocationRoot to dialog

Translation keys already existed in all 28 language files.

app/src/main/kotlin/me/eternal/purrfectsnap/ui/manager/pages/location/BetterLocationRoot.kt

@@ -337,9 +337,15 @@ class BetterLocationRoot : Routes.Route() {
                             )
                         ) {
                             Box(modifier = Modifier.background(PurrfectPalette.cardOverlay)) {
-                                alertDialogs.ChooseLocationDialog(property = coordinatesProperty, marker, mapView, saveCoordinates = {
-                                    addSavedCoordinateDialog = true
-                                }) {
+                                alertDialogs.ChooseLocationDialog(
+                                    property = coordinatesProperty,
+                                    marker = marker,
+                                    mapView = mapView,
+                                    locationSearchProvider = context.config.root.global.betterLocation.locationSearchProvider.get(),
+                                    saveCoordinates = {
+                                        addSavedCoordinateDialog = true
+                                    }
+                                ) {
                                     showMap = false
                                     context.config.writeConfig()
                                 }

app/src/main/kotlin/me/eternal/purrfectsnap/ui/util/AlertDialogs.kt

@@ -58,6 +58,7 @@ import okhttp3.OkHttpClient
 import okhttp3.Request
 import org.osmdroid.config.Configuration
 import org.osmdroid.tileprovider.tilesource.TileSourceFactory
+import org.osmdroid.tileprovider.tilesource.XYTileSource
 import org.osmdroid.util.GeoPoint
 import org.osmdroid.views.CustomZoomButtonsController
 import org.osmdroid.views.MapView
@@ -592,6 +593,7 @@ class AlertDialogs(
         property: PropertyPair<*>,
         marker: MutableState<Marker?> = remember { mutableStateOf(null) },
         mapView: MutableState<MapView?> = remember { mutableStateOf(null) },
+        locationSearchProvider: String = "osm",
         saveCoordinates: (() -> Unit)? = null,
         dismiss: () -> Unit = {}
     ) {
@@ -611,7 +613,16 @@ class AlertDialogs(
             MapView(context).apply {
                 setMultiTouchControls(true)
                 zoomController.setVisibility(CustomZoomButtonsController.Visibility.NEVER)
-                setTileSource(TileSourceFactory.MAPNIK)
+                val tileSource = if (locationSearchProvider == "google_maps") {
+                    XYTileSource(
+                        "GoogleMaps",
+                        0, 19, 256, ".png",
+                        arrayOf("https://mt0.google.com/vt/lyrs=m&x=", "https://mt1.google.com/vt/lyrs=m&x=")
+                    )
+                } else {
+                    TileSourceFactory.MAPNIK
+                }
+                setTileSource(tileSource)
 
                 val startPoint = GeoPoint(coordinates.first, coordinates.second)
                 controller.setZoom(10.0)