Repurpose `.vmt` parser to generate a bulk RePak map `.json` for `.rpak` generation

[snake-biscuits]

If we're going to port Titanfall 1 maps to Titanfall 2, we need bulk .rpak conversion

This will require a few things:

• [ ] Get a manifest of files to convert from a .vpk directory
  • [ ] target some folder with all Titanfall 1 materials extracted into it (.rpak needs to match material paths)
  • [ ] a .vpk header -> filelist.txt script
• [ ] Interface with texconv to bulk convert to .dds
• [ ] Run a RePak build w/ wld materials & proper shaderset linking
  • [ ] Work with RePak / Legion+ devs on new .rpak tools & documentation

These .rpaks will likely end up blending in models etc., so we need to plan for sharing our vpk_map.json We'll also want to generate loadscreen .rpaks

[snake-biscuits]

a .vpk header -> filelist.txt script

Seems simple enough, the header isn't encrypted / compressed so we just need a parser I might have one lying around someplace, maybe

Work with RePak / Legion+ devs on new .rpak tools & documentation

They're refactoring rn afaik Once that's done we can hopefully dive into wld materials again