Adds UI elements, state in multiple classes and texture assets to choose and store the current tile view mode (temperature or “normal”)
Resolves #63
Hello! This is the first, and arguably the easiest, step in introducing temperature as a concept. It really only meant adding a new state variable in the appropriate places and wiring up a way to control (and show) the current state in the UI. And of course, similar to the wall draw state, make it togglable via a hotkey. Bask in its glory below: