[Bug]: Models missing from registry

[laserkelvin]

Expected behavior

Model architectures should be consistently reference-able in the global registry, by decorating the class definition with @registry.register_model.

Actual behavior

The visualization below shows the dependency graph of registry, and only flags FaeNet as the only model module co-dependency.

Steps to reproduce the problem

N/A

Specifications

The codebase on main branch as of 88da915