Support models with custom geometry files

[nickbianco]

trafficstars

Currently, we expect that uploaded models use geometry files that are included in the Geometry folder used internally by AddBiomechanics. However, a user might have a model with different geometry files.

We can test all types of geometry files, but we could at least provide an option and tell users that YMMV.

[davidpagnon]

Following for my personal interest

[AlbertoCasasOrtiz]

Related to this. In the case a geometry file is missing, users are not getting useful feedback indicating this is the case. Example below using OpenCap ISB shoulder. Error message is "-", and you have to check the logs to know what may be happening, which may be cryptic for users.

[nickbianco]

I think this might be as straight-forward as adding the geometry files here: https://github.com/keenon/AddBiomechanics/tree/main/server/engine/Geometry

Then it's just a matter of figuring out how to retrieve user's model-specific geometry files and adding them to this folder during processing.