This ended up having a lot more changes to the loading process than I thought it would. We now start loading PC levels ahead of time, instead of waiting for the first tfrag/tie draw.

Summary of changes:

• decompiler now checks that duplicate textures have the same data
• decompiler includes all level textures in FR3's and adds a flag for if they are part of the levels texture (not "borrowed" from other levels that happened to be loaded)
• decompiler supports texture replacement
• decompiler outputs GAME.fr3 file for common textures
• texture names in assets/texture replacement no longer have the size/mip
• got rid of graphics dumps
• engine now tells graphics systems which levels are loaded/loading
• graphics begins loading based on game level loading, not tfrag/tie draws (sometimes we need texture from loaded levels that are not drawing tfrag/tie)
• all texture are provided through the loader
• fixed some logic bugs in the vertex upload load states. We're getting closer to loading without dropping frames.
• the texture converter and cache is removed!