Add two more datasets + ruff linting

[hadim]

Changelogs

• Add two more datasets: dm.chembl_drugs() and dm.chembl_samples(). Those cover a more drug like and diverse chemical space than the existing ones, so they might be convenient for various prototyping and development situations.
• Lint the code with ruff and run ruff in CI.

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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.
• [x] 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.
• [x] Write concise and explanatory changelogs below.
• [x] 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[bot]]

Codecov Report

Merging #208 (be52130) into main (fc0431b) will decrease coverage by 0.13%. The diff coverage is 63.15%.

@@            Coverage Diff             @@
##             main     #208      +/-   ##
==========================================
- Coverage   92.07%   91.94%   -0.13%     
==========================================
  Files          46       46              
  Lines        3809     3826      +17     
==========================================
+ Hits         3507     3518      +11     
- Misses        302      308       +6     

Flag	Coverage Δ
unittests	91.94% <63.15%> (-0.13%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
datamol/descriptors/descriptors.py	90.90% <0.00%> (ø)
datamol/fragment/_fragment.py	90.80% <0.00%> (ø)
datamol/graph.py	97.39% <ø> (-0.03%)	:arrow_down:
datamol/isomers/_structural.py	88.11% <ø> (-0.24%)	:arrow_down:
datamol/mol.py	97.00% <0.00%> (ø)
datamol/utils/perf.py	96.87% <ø> (-0.19%)	:arrow_down:
datamol/fragment/_assemble.py	80.40% <33.33%> (ø)
datamol/scaffold/_fuzzy.py	90.44% <50.00%> (ø)
datamol/data/__init__.py	78.30% <72.00%> (-1.22%)	:arrow_down:
datamol/conformers/_features.py	91.07% <100.00%> (-0.16%)	:arrow_down:
... and 2 more

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