TrenchBroom model support

[Shfty]

TB looks for models relative to the game directory, so a setup for saving ArrayMesh resources as res:// MDL/MD2/MD3 will be needed.

Further to that, FGD resources will need a way to specify their model and any extra associated metadata. Probably best to do this first to allow users to export their own MDL files and use them with a Qodot-generated FGD, then hook it into an internal MDL generator for automation.

[disco0]

For anyone interested, I've been working on a TrenchBroom entity model generator addon in preparation for obj support in TrenchBroom, godot-nous:

• Entity info and export panel, loads from your qodot game config resources
• Settings for game directory/qodot config paths
• Add additional extractor extension classes for your own entity scene structures

In the process of refactoring now that I've got it mostly working (very much a learning experience) so very WIP, but the UI is fully functional and the export is faster than any other obj addon I've looked at working on this. Been using exported objs in a build of TrenchBroom with assimp support for a couple months now c: