Better project saving

[NicDoesCode]

Saving projects can be expensive, it would be good to have an async timer based save project function that is called and saves the project only after a period of time.

If the timer hasn't elapsed then it will be reset.

This would be nicer when performing operations such as paint, as you could spam the save project function, for example if the mouse moves, but the project would only be effectively saved X seconds after you actually perform the action.

There may also need to be some UI that indicates that the project was saved too.