Some QOL updates

I've included some UI elements to allow you to test the different sizes and values for the dungeon, some tooltips to explain the limits of each, and a very limited game controller with health and damage. No actual combat. Don't run over the red orbs. You will notice that the gate changes to a boss gate every few levels. This is my way of showing that a boss event can be spawned at the end of the level. If you go through that gate, it registers it as a completed run and increments that counter. It's saved in PlayerPrefs along with the death counter.