Add frame tick system for continuous animation

- Added INPUT_FRAME_TICK event type to input_event.h
- Added wants_frame_updates() virtual method to Game base class
- Implemented frame tick logic in main loop (basic1.cpp and emulator/main.cpp)
- Added Lua bindings: game.set_frame_updates(bool) and INPUT.FRAME_TICK
- Updated LuaGame to support frame updates via registry flag
- Updated ball.lua to use continuous frame updates for smooth animation
- Both hardware and emulator now support continuous animation for physics/games

games/lua_game.cpp

@@ -193,6 +193,18 @@ bool LuaGame::wants_to_exit() const {
     return exit;
 }
 
+bool LuaGame::wants_frame_updates() const {
+    if (!L) return false;
+    
+    // Check if Lua script wants continuous frame updates
+    lua_pushstring(L, "__wants_frame_updates");
+    lua_gettable(L, LUA_REGISTRYINDEX);
+    bool wants_updates = lua_toboolean(L, -1);
+    lua_pop(L, 1);
+    
+    return wants_updates;
+}
+
 bool LuaGame::call_lua_function(const char* func_name, int nargs, int nresults) {
     int result = lua_pcall(L, nargs, nresults, 0);
     if (result != LUA_OK) {