Implement Rumble

src/decomp/global_state.h

@@ -35,6 +35,7 @@ struct GlobalState
     s8 mgShowDebugText;
     s8 mgDebugLevelSelect;
     s16 mgCurrSaveFileNum;
+    s32 mgMarioId;
     struct Controller mgController;
     struct SpawnInfo mgMarioSpawnInfoVal;
     struct Area *mgCurrentArea;