Refactored hard-coded setup of pieces, Moved preload of scenes from draw_pieces to ready(). player_gold now updates and dispalys with piece capture!
Changed shop to 3 items of each, added rarity tiers for items and upgrades. Shop is now kinda centered sometimes
Added gold display. Hides the board and pieces when shop is displayed.
Refactoring game.gd to split up move validation to individual pieces, added new scripts that inherit from Piece.gd
