feat: collaborative editor (multiplayer)

[LiamGallagher737]

Reason

I've noticed people on the discord like to use the playground for helping others debug and fix their code. Having a collaborative environment would improve the experience for this use case.

Implementation

My idea for the implementation of this is to have another web server that's hosts "rooms" that users can connect to with a unique ID that the host will get when they create a room. Users will then communicate with this server over a web socket.

The warp framework seems to have good web socket support so I'd likely go with it for the server.

There is a good article on how to implement collaboration with a Monaco editor that we could use as a reference to build the front end in, live cursors and stuff.