Removed TODO from repo
Added Camera.GetPixelsToUnits() and Camera.GetUnitsToPixels()
Added Camera.IsPositionInFrustum() for orthographic cameras
Moved Vector2 object from GUI file to CraftStudio file
Added Camera.WorldToScreenPoint() for orthographic cameras.
Moved CS.Input.GetMousePosition(), CS.Input.GetMouseDelta() and CS.Screen.GetSize() from GUI file to CraftStudio file.
Added functions debug infos for the Vector2 object.