Implement/match LegoRaceActor (#1072)

* Implement LegoRaceActor, add annotations

* Change code duplication comments

---------

Co-authored-by: jonschz <jonschz@users.noreply.github.com>

LEGO1/realtime/matrix.h

@@ -122,6 +122,7 @@ public:
 		}
 	}
 
+	// FUNCTION: BETA10 0x1001c6a0
 	void RotateX(const float& p_angle)
 	{
 		float s = sin(p_angle);