chatty-based reimplementation of sketchmap
tested with the MAD test with original smap, the result is quite similar

for now, there is only fit_transform method, for out-of-distribution data user needs to either do out-of-sample embedding or train a MLP (as done in MAD paper!).

also, i tried to do the function that suggests parameters from https://sketchmap.org/index.html?page=tuts&psub=analysis but should be refined!

TODO:

• Check similarity with original sketchmap results
• Clean up code
• Clean up example
• Add tests?

Contributor (creator of PR) checklist

• Tests updated (for new features and bugfixes)?
• Documentation updated (for new features)?
• Issue referenced (for PRs that solve an issue)?

For Reviewer

• CHANGELOG updated if important change?

📚 Documentation preview 📚: https://scikit-matter--284.org.readthedocs.build/en/284/