add draco support for gltf

[seed93]

1. add draco support for gltf
2. fix #1971

Note: only export_glb with draco supported, not for gltf export yet.

[seed93]

The failed format check is not introduced by this merge request.

[seed93]

rebase done

[mikedh]

Awesome thanks for the followup this looks a lot closer!!

• What's the maintenance plan for pydracogltf? Would you be interested in adding it to the trimesh github org?
• Where's the source for the pydracogltf binary libraries? Without the source it's hard to see what's happening and we can't add it as a dependency.
• I'm happy to help setting up the CI for this, I would use this as a template: embreex/pyproject.toml

[seed93]

Awesome thanks for the followup this looks a lot closer!!

* What's the maintenance plan for `pydracogltf`? Would you be interested in adding it to the `trimesh` github org?

* Where's the source for the [pydracogltf binary libraries](https://github.com/seed93/pydracogltf/tree/master/pydracogltf/libs)? Without the source it's hard to see what's happening and we can't add it as a dependency.

* I'm happy to help setting up the CI for this, I would use this as a template: [embreex/pyproject.toml](https://github.com/mikedh/embreeX/blob/main/pyproject.toml)

I can maintain this project and I am happy to add it to trimesh github org. The source code of this binary is here, used for blender.

[seed93]

Shall we merge this request?

[mikedh]

Thanks for the followup! I think the upstream project still needs a bit of work before we can add a dependency:

• the source code for the libs should be added to pydracogltf
• the compiled artifacts in pydracogltf/libs should be removed from the repo
• pyproject.toml should use cibuildwheel to compile the libraries from source, as in embreex/pyproject.toml
• CI should release to PyPi using a token stored in the repo's secrets.