Adding additional versions of tmqm.

[chrisiacovella]

Pull Request Summary

Provide 4 additional subsets of the tmqm dataset

Key changes

various subsets:

• Pd, Zn, Fe, Cu: 27685 molecules
• Pd, Zn, Fe, Cu and then exclude any molecules that contain elements not in the set: C, H, P, S, O, N, F, Cl, Br: 18515 molecules
• Pd, Zn, Fe, Cu, Ni, Pt, Ir, Rh, Cr, Ag: 60637 molecules
• Pd, Zn, Fe, Cu, Ni, Pt, Ir, Rh, Cr, Ag and then exclude any molecules that contain elements not in the set: C, H, P, S, O, N, F, Cl, Br: 40866 molecules

Associated Issue(s)

• tmQM dataset splitting according to metal elements #329

Pull Request Checklist

• Issue(s) raised/addressed and linked
• Includes appropriate unit test(s)
• Appropriate docstring(s) added/updated
• Appropriate .rst doc file(s) added/updated
• PR is ready for review

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.83%. Comparing base (f8503c2) to head (b724044).

Additional details and impacted files