API and guide docs for new forcefield classes

[scal444]

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[scal444]

docs.zip
@evasnow1992 rendered is probably easier to review, attached the html tree

[greptile-apps]

Greptile Summary

This PR adds API documentation entries for the new MMFFBatchedForcefield, UFFBatchedForcefield, MMFFBatchElement, and UFFBatchElement classes, and a new forcefield.rst user guide covering GPU-accelerated force field optimization. The guide is well-written with accurate cross-references and useful code examples.

• P1 – shared template change: Adding :inherited-members: to class_template.rst affects all classes documented with that template (MorganFingerprintGenerator, SubstructSearchConfig, AsyncGpuResult, etc.), not just the new forcefield classes. If any of those classes inherit non-trivial public methods, those will now appear in existing API pages unexpectedly. A dedicated template or per-block option is the safer approach.

Confidence Score: 3/5

Safe to merge after verifying the intended scope of the :inherited-members: change in the shared class template.

One P1 finding: :inherited-members: added to the shared class_template.rst unintentionally changes API doc rendering for all existing classes, not just the new forcefield ones. The impact depends on the inheritance hierarchy of existing classes and should be confirmed before merging.

docs/_templates/class_template.rst — the :inherited-members: addition has broader scope than the PR title implies.

Important Files Changed

Filename	Overview
docs/_templates/class_template.rst	Adds :inherited-members: globally to the shared class autodoc template, which will affect all existing classes documented with it, not only the new forcefield classes.
docs/api/nvmolkit.rst	Adds autosummary entries for MMFFBatchedForcefield, MMFFBatchElement, UFFBatchedForcefield, and UFFBatchElement under the correct MMFF/UFF Optimization sections using class_template.rst.
docs/forcefield.rst	New guide covering GPU-accelerated MMFF/UFF force fields; code examples are clear and :ref: targets are valid, but several code blocks depend on mols defined in an earlier block without explicit note.
docs/index.rst	Adds forcefield to the Guides toctree — straightforward and correct.

_{Reviews (1): Last reviewed commit: "Allow inherited members in API docs" | Re-trigger Greptile}

[evasnow1992]

Changes look good to me.