Initial sphinx-gallery

[maximelucas]

Addressing #583: initial try for a new gallery that's automatically generated from individual small python scripts.

Right now it's accessible through a new item "Gallery of examples" in the menu. I think it could ultimately be merged with our current Gallery by porting the existing plots into this new format.

Let me know if you like it, and we can see what to add (now or later).

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.24%. Comparing base (139a2bc) to head (d6a9d7d).
Report is 1 commits behind head on main.

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  Coverage   93.24%   93.24%           
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  Files          62       62           
  Lines        4735     4735           
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  Hits         4415     4415           
  Misses        320      320           

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[nwlandry]

Looks great @maximelucas!! Only comment is that I would remove the "Gallery" tab and examples and remove the "Algorithms" subsection.

[nwlandry]

Looks good! Only comment is wow there are a lot of files --- how does this compare to other libraries?

[maximelucas]

Thanks Nich! Most of the files were autogenerated, I removed them.

Also for the record I only needed to:

• add a few lines to conf.py
• add single .py files for each example

Basically that's it. And to add new examples, we just need to add single plot_*.py files in the examples/ folder and its subfolders.

I put the Gallery visible in the menu too (moved away from dropdown). If you like it I'll merge.

[nwlandry]

Looks great! When you merge this PR, can you open an issue to add in some more examples and can you also make sure that the unused pictures and files from the old gallery are deleted?