lobby.gd had gotten big, bloated, ugly, and hard to read. It needed a
refactor. The first thing I did is split up the *GUI* into the logical
steps it should be. So the new flow is:

 - Start the game
 - Click "Quick Play"
 - Matchmaking begins on my dedicated server

 - Start the game
 - Click "Custom Game"
 - *Only now* am I presented with server / client options

 - Start the game
 - Click "Singleplayer"
 - Singleplayer

NOW, and only now, and NO MATTER WHAT PATH I TAKE, I am taken to the
*lobby*, which now is where I:
 - Choose my name
 - Choose hero
 - See list of players
 - Get my team assigned
 - Anything else that I might like to put in
The point here is that this has *nothing* to do with handshaking /
matchmaking / etc! This is just part of the game! At this point I have
*already been connected* to the server. I've already been aquainted with
my other players. The game has begun.

I put the things that don't belong in any of these flows in
networking.gd, a sort of model-view sorta thing. All of these flows use
some sort of networking thing like `init_server` that tbh should be
*completely* abstracted from the UI.

It's totally a WIP!!! Above is the IDEA, but below is what I've actually
*done*:
 - Made the scenes, made a passable UI for each one that at least
 indicates ~what they'll do
 - Made the corresponding scripts, and split up the lobby script into
 ABOUT where I think it'll end up, but no promises
It still errors all over the place, and it's nowhere near properly
organized. PLUS, I'd also like to rewrite a lot of the code / rename
things as part of the initial refactor goal of making me able to
actually think about networking.

Also, levels now inherit a level object

Just to make my git clean

Changing the weight of the objective fixes the weird destroy-the-player
physics.

Also, count how long the objective has been tilted to the right or left,
and put counters there. Slow the game down and display who won when the
count exceeds 100% on either side. Like in overwatch, but with tilting.

While on wall, if you press jump, you leap up and away from the wall

If you do so immediately after leaving the wall (<tolerance=.150s), it
still works

There however were some bugs that came with this, so I'm switching to
master to explore this.