Godot is a pain with source control and sometimes you've just gotta have
a trash commit. This is it.

Also allows subsequent connections, but it's broken. Don't tell the git
gods that this commit is a lie

I love git bisect! The problem was due to me accidentally deleting a
crucial condition `is_network_master` when checking for hero_switch
input.

This reverts commit f41676c672.

I misunderstood the way the camera projections work, and I'm better off
using the original raycasting strategy.

Hero 1 fails, probably 0 too haven't checked though. Hero 2 is fine.
Haven't tested 3.

And Camera.project_ray_normal. This is much better

This will make testing MUCH better, I do believe.

Also, levels now inherit a level object

Hero 0 speeds up especially quickly!

Currently it just switches up by one hero.

To change, I had to change the set_status rpc protocol to include
rotation (that way switching heroes isn't jarring); so they're combined
here.

Hero 0: Remove cursor, allow wallriding (enable collision detection)

Hero 2: Move RepelHUD to center, ignore self with Area (gravity)

Accidentally put it in the wrong place before

Within radius 8, attracts heroes with gravity.