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