Need to keep the Third Party Camera inside the home

Hi @winthos ,

Thanks for working on the other issue I submitted #[910](https://github.com/allenai/ai2thor/issues/910).

I am using third party camera to get the top view of the environment and using updateThirdPartyCamera API to move the camera. Like MoveForward is + 2 in x pose and backward is -2 in x pos. But sometime is camera going out of the home as per pos, I need a way to check given position is valid or not valid based on whether its inside or outside home environment . Could you please suggest a way?. Thanks.