TFC and NeuMouse

Quickie without any fun sketches this time.

I added a new camera! It stretches out in front of the wizard as you run instead of lagging behind, it's another piece of dark magic to add to my 2D arsenal. Overall it just lets you see where you're going instead of where you've been without sacrificing too much of the position smoothing of Godot's normal 2D camera.

There's also a new mouse positioner! I call it the mouse trap because before you would always right click somewhere outside the game and it would open a menu, and now the mouse is solidly in the game. The mouse's position is now relative to Wiz, so it feels more like you are where Wiz is when you're manipulating objects. Given that combat is meant to be an important thing, that's nice. It can be a bit disorienting though, so later I'll add an option to enable analog.

There's a few other bugs, especially one with controller and Right Trigger, that I'm working on knocking out, but I figure it'll be fine to let these gameplay tweaks trickle down as I start thinking about the next big step for Grip's transition into a whole new map.