Add map tile caching

lib/consts.dart

@@ -9,7 +9,7 @@ class TTConsts {
   static get SESSION_SERVER =>
       "https://api.zontreck.com/timetrack/${UPDATE_CHANNEL}/timetrack.php";
 
-  static const VERSION = "1.0.0-beta.4";
+  static const VERSION = "1.0.0-beta.5";
 
   static bool UPDATE_AVAILABLE = false;
   static UpdateChannel UPDATE_CHANNEL = UpdateChannel.beta;

lib/main.dart

@@ -1,9 +1,12 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_map_tile_caching/flutter_map_tile_caching.dart';
 import 'package:timetrack/consts.dart';
 import 'package:timetrack/data.dart';
 import 'package:timetrack/pages/MainApp.dart';
 
 Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
   await TTConsts.checkUpdate();
   var sess = Uri.base.queryParameters["code"] ?? "";
 
@@ -15,5 +18,10 @@ Future<void> main() async {
       SessionData.DisplayError = "The URL and or session token is invalid";
     }
   }
+
+  await FMTCObjectBoxBackend().initialise();
+
+  await FMTCStore('mapStore').manage.create();
+
   runApp(MainApp());
 }

lib/pages/MapPage.dart

@@ -4,6 +4,7 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
 import 'package:libacflutter/Constants.dart';
 import 'package:timetrack/data.dart';
+import 'package:flutter_map_tile_caching/flutter_map_tile_caching.dart';
 
 class MapPage extends StatefulWidget {
   MapPage({super.key});
@@ -21,6 +22,10 @@ class _MapPage extends State<MapPage> {
   List<Marker> Markers = [];
   bool autorefresh = true;
 
+  final _tileProvider = FMTCTileProvider(
+    stores: const {'mapStore': BrowseStoreStrategy.readUpdateCreate},
+  );
+
   @override
   void initState() {
     SessionData.Calls.MapCallback = call;
@@ -137,6 +142,7 @@ class _MapPage extends State<MapPage> {
               TileLayer(
                 urlTemplate: "https://tile.openstreetmap.org/{z}/{x}/{y}.png",
                 userAgentPackageName: "dev.zontreck.timetrack",
+                tileProvider: _tileProvider,
               ),
               PolylineLayer(
                 polylines: [