Add xtensor docs

[ricardoV94]

Closes #1502

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📚 Documentation preview 📚: https://pytensor--1504.org.readthedocs.build/en/1504/

[OriolAbril]

other than fixing the environment everything looks good, there are a couple other things that could be done but also feel free to merge with just fixing the environment

[ricardoV94]

We get a lot of Warning: document isn't included in any toctree. Do we care?

[OriolAbril]

We get a lot of Warning: document isn't included in any toctree. Do we care?

A lot of? For the pages we have added or other ones? This means those pages are not reachable through the navbar+sidebar navigation. Unless there are referenced in another page or the users magically know their url they won't be able to reach them. Ideally there wouldn't be toctree warnings, if we really want to have pages that are not on the toctree and are only referenced inline somewhere else they should include :orphan: in their frontmatter

[ricardoV94]

Okay not a lot:

/home/ricardo/Documents/pytensor/doc/README.md: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/misc/pkl_utils.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/scalar/index.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/sparse/sandbox.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/tensor/random/distributions.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.concat.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.dot.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.type.XTensorConstant.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.type.XTensorType.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.type.XTensorVariable.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.type.as_xtensor.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.type.xtensor.rst: WARNING: document isn't included in any toctree
/home/ricardo/Documents/pytensor/doc/library/xtensor/generated/pytensor.xtensor.type.xtensor_constant.rst: WARNING: document isn't included in any toctree

Some are the ones I removed that are tracked in #1512 the others are dot, concat which is odd, and the xtensor.type, that I mentioned is coming up blank

distributions.rst probably became an orphan earlier on. Mentioned on the issue

[OriolAbril]

The ones in the generated folder is because they were automatically generated by autosummary at some point when :toctree: generated/ was set, now that it is not used these should be removed. The readme we probably want to exclude from conf.py. And the rest we can track in the issue

[ricardoV94]

If you are checking out the branch already feel free to push the removal of readme.md

[codecov]

Codecov Report

Attention: Patch coverage is 56.72131% with 132 lines in your changes missing coverage. Please review.

Project coverage is 81.85%. Comparing base (ae38884) to head (9ba1b37).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
pytensor/xtensor/math.py	56.38%	0 Missing and 99 partials ⚠️
pytensor/xtensor/random.py	57.89%	0 Missing and 32 partials ⚠️
pytensor/xtensor/type.py	50.00%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (56.72%) is below the target coverage (100.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1504      +/-   ##
==========================================
- Coverage   82.04%   81.85%   -0.20%     
==========================================
  Files         231      231              
  Lines       52364    52532     +168     
  Branches     9217     9348     +131     
==========================================
+ Hits        42962    42999      +37     
  Misses       7094     7094              
- Partials     2308     2439     +131     

Files with missing lines	Coverage Δ
pytensor/xtensor/linalg.py	86.66% <ø> (ø)
pytensor/xtensor/shape.py	80.37% <ø> (ø)
pytensor/xtensor/type.py	68.48% <50.00%> (ø)
pytensor/xtensor/random.py	66.66% <57.89%> (-23.21%)	⬇️
pytensor/xtensor/math.py	64.62% <56.38%> (-32.39%)	⬇️

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[OriolAbril]

xtensor.type page fixed and README excluded. I spent most of the time being gaslighted by automodule telling me no-index wasn't valid, re-reading the docs, trying different characters for the hyphen, doing :no-index: true instead. The docs seem clear on that:

It was :noindex: with no hyphen at all 🤦🏿

[ricardoV94]

That seems like a very fun afternoon xD

[ricardoV94]

@OriolAbril do you want to take a last look before we merge?