Initial work on entity introspection

Runtime/World/CPlayer.hpp

@@ -622,5 +622,7 @@ public:
   bool IsInWaterMovement() const { return x9c4_31_inWaterMovement; }
   void SetNoDamageLoopSfx(bool val) { x9c7_24_noDamageLoopSfx = val; }
   void SetAccelerationChangeTimer(float time) { x2d4_accelerationChangeTimer = time; }
+
+  IMGUI_ENTITY_PROTOTYPES
 };
 } // namespace metaforce