Add lz4 decompression to read new mesh files

[Perryvw]

We need to be able to lz4 decompress to read the new TI9 dota files. I tried setting up decompression in the python blender plugin but the environment gave a lot of issues. Any contributions in this area are welcome.

Would fix #5

[phamtheson01]

and add auto rotate -90 too,would help a lot,thanks

[GoranKovac]

This is the issue when it breaks on some meshes because of NoneType object (Mars_base model for example)?

[Perryvw]

VRF https://github.com/SteamDatabase/ValveResourceFormat can be used to export to GLTF (which can be imported by Blender), this also works for these files