Debug drawing#40

I know this is a pretty big request, but it would provide an equally big benefit.

When working in a complex environment, just print statements in the log is not always enough to understand what’s going on in the code. It would be a very powerful debugging tool to be able to draw simple shapes into the game world. They would only show up if one of the technical layers is on (either hitboxes or stage collision) and would only last for the single frame they were drawn on (extendable by frame advance of course). Controllable colours would be nice but not necessary.

Shapes I would expect to see available:

• point
• line
• circle

Shapes that would be cool bonuses:

• rectangle
• sphere
• capsule
• text