Add rdkit as a pypi dep

[hadim]

Changelogs

• Add rdkit as a pypi dep. Now possible after the rdkit conda package fix at Run pip install during the build to generate the dist-info folder and add support for rdkit-stubs conda-forge/rdkit-feedstock#143

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Checklist:

• Was this PR discussed in an issue? It is recommended to first discuss a new feature into a GitHub issue before opening a PR.
• Add tests to cover the fixed bug(s) or the new introduced feature(s) (if appropriate).
• Update the API documentation is a new function is added, or an existing one is deleted.
• Write concise and explanatory changelogs below.
• If possible, assign one of the following labels to the PR: feature, fix or test (or ask a maintainer to do it for you).

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discussion related to that PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c23d273) 91.95% compared to head (714919a) 91.93%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #219      +/-   ##
==========================================
- Coverage   91.95%   91.93%   -0.03%     
==========================================
  Files          46       46              
  Lines        3843     3843              
==========================================
- Hits         3534     3533       -1     
- Misses        309      310       +1     

Flag	Coverage Δ
unittests	91.93% <ø> (-0.03%)	⬇️

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