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

lib/input_event.h

@@ -17,7 +17,8 @@ enum InputType {
     INPUT_TOUCH_UP,
     INPUT_BUTTON_0,
     INPUT_BUTTON_1,
-    INPUT_GESTURE
+    INPUT_GESTURE,
+    INPUT_FRAME_TICK      // Sent every frame for animation/continuous updates
 };
 
 // Unified input event structure