Add simple debug interface

[kanerogers]

Background

Debugging Hotham apps is a pain. This feature would give us the ability to debug running apps.

A simple a way to do this would be to have a web app that communicates with the game engine over a websocket. This webapp could display information about the running game, plus add the ability to change or tweak values on the fly.

TODO

• Create webapp
• Add websocket server
• Test

[kanerogers]

Scope of prototype:

• Change the debug params in the scene UBO

[kanerogers]

Questions to answer:

• How do we run a websocket server in Rust?
• How should the websocket server interact with the engine?