replaces most of the ui elements into a deltarune / undertale themed version (mostly deltarune)

includes:

- main menu

- game icons

- containers ( inventory and furnace and stuff)

-background

(and also because idk how to change the "Inventory" text colors so i decided to remove all of them completely (you wouldnt need those anyways)

inspired by (and also borrowed stuff from) 𝔻𝕖𝕝𝕥𝕒𝕣𝕦𝕟𝕖 (Texture Pack)