basic texture swapping

After actl not too much pain, I got basic texture swapping done. I created a helper class to handle all my texture swapping logic, and it works quite neatly. I do hate File I/O in any programming language, but my mod kind of revolves around FIle I/O, and honestly, even though I got some super unhelpful error messages (I got empty error messages), I somehow managed to pull through
Some things I have yet to work on:

• fix ui to allow all installed packs (currently for testing I just use Motchsens better leaves, since it’s a small pack)
• allow not just textures but also block models to be hotswapped
• pray modrinth reviews my project so i can ship it

✌️