Include gnm.shape.data packages in setuptools package list.

[vraj130]

gnm_base.py, gnm_data_loader.py, and gnm_landmarks.py import
gnm.shape.data.versions.gnm_specs and gnm_catalog as regular Python
modules, but the [tool.setuptools] packages list in pyproject.toml does not
declare gnm.shape.data or gnm.shape.data.versions. The package-data globs
only cover asset files (npz, images, md, h5), so built distributions omit
gnm_specs.py and gnm_catalog.py entirely.

As a result, installing gnm-shape from a built wheel (pip install . without
-e, or a wheel from python -m build) fails at import time:

  ImportError: cannot import name 'gnm_specs' from
  'gnm.shape.data.versions' (unknown location)

CI does not catch this because all workflows install the package in editable
mode (pip install -e), which puts the whole source tree on sys.path.

Fix: declare the two missing packages in the packages list.

Verification: built a wheel before and after this change. Before, the wheel
contains no .py files under gnm/shape/data/ and importing
gnm.shape.gnm_numpy from the installed wheel raises the ImportError above.
After, gnm_specs.py and gnm_catalog.py are included (the .npz model asset
ships correctly in both cases) and GNM.from_local works from the installed
wheel, returning the expected (17821, 3) vertex array.

[bednarikjan]

@vraj130 Please update your branch to the ToT. We recently made some minor changes to the CI naming which prevents your PR from integrating with our codebase. Alternatively, you can allow "Allow edits from maintainers" on your branch which would allow us to update the branch on your PR on our side, thanks!

[vraj130]

@bednarikjan thanks for flagging it, I've rebased it. Also not sure why it doesn't show you but I've always selected the option which allows for you to edit.

One more thing, I've also rebased #28 in case you wanna merge along this one, so It won't need to rebase again, but if the approval process its too long, I will be happy to rebase it again when you have time to attend!

[bednarikjan]

Thanks @vraj130, it worked now and the PR is merged.