Inventory Experimentation, Item Drops, Controls Update

UPDATES:

Kept the editor highlight always visible when in EDITOR MODE

Implemented MOUSE and WASD controls. Immediately swaps between MOUSE and CONTROLLER modes upon usage.

Implemented Droppable items.

BEHIND THE SCENES:

I had made a splash-screen style inventory popup. I had it all connected, and would update and add to inventory upon deleting a wall. Unfortunately, I didn't feel a popup inventory was what I was going for, so I scrapped it, saved the important relay code, and made a transparent toolbar instead (bottom of the screen, currently blank). The salvaged relay code will be used to communicate with the toolbar from the world node so inventory updates and coordinated drops will be possible.