Add bidirectional host bridge

lib/runtime/game/lua_game_widget.dart

@@ -2,6 +2,7 @@ import 'package:flame/game.dart';
 import 'package:flutter/widgets.dart';
 
 import '../diagnostics/runtime_diagnostics.dart';
+import '../host/runtime_host_bridge.dart';
 import '../packages/game_package_repository.dart';
 import '../scripting/lua_dardo_script_engine.dart';
 import 'flame_lua_game.dart';
@@ -14,6 +15,7 @@ class LuaGameWidget extends StatelessWidget {
     this.serverUrl,
     this.localeOverride,
     this.runtimeOptions = const RuntimeOptions(),
+    this.hostBridge = const RuntimeHostBridge(),
     super.key,
   });
 
@@ -22,6 +24,7 @@ class LuaGameWidget extends StatelessWidget {
   final Uri? serverUrl;
   final Locale? localeOverride;
   final RuntimeOptions runtimeOptions;
+  final RuntimeHostBridge hostBridge;
 
   @override
   Widget build(BuildContext context) {
@@ -42,6 +45,7 @@ class LuaGameWidget extends StatelessWidget {
                   )),
         gameId: gameId,
         runtimeOptions: runtimeOptions,
+        hostBridge: hostBridge,
         localeOverride: localeOverride,
       ),
     );