🧱 Add basis of tencent rtc

lib/pods/database.dart

@@ -0,0 +1,11 @@
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:island/database/drift_db.dart';
+
+import 'package:island/database/database.native.dart'
+    if (dart.library.html) 'package:island/database/database.web.dart';
+
+final databaseProvider = Provider<AppDatabase>((ref) {
+  final db = constructDb();
+  ref.onDispose(() => db.close());
+  return db;
+});