[Cleanup] Cleanup #door Command. (#2783)

* [Cleanup] Cleanup #door Command.

# Notes
- Resolves an issue with `.1` versus `0.1`.
- Resolves an issue with updating a pre-existing door.
- Adds `heading` to the update/insert.

* Update doors.cpp

zone/doors.h

@@ -65,6 +65,7 @@ public:
 	float GetX();
 	float GetY();
 	float GetZ();
+	float GetHeading();
 
 private: