Add intro notebook from workshop

[juanitorduz]

Closes #1584

I made very few modifications to the original content.

It would be nice to have this one ready before the Euro Scipy talk :)

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📚 Documentation preview 📚: https://pytensor--1585.org.readthedocs.build/en/1585/

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[jessegrabowski]

Removed the seeding part and just left a small pymc model and show where PyTensor appears. Is this ok?

I actually think showing that we fully transform a forward graph x ~ N(0, 1 | y) to logp(x ,y) using only graph inspection is a good thing to do. It's extremely impressive, and I think most people don't even realize it's happening.

[jessegrabowski]

This one fell through the cracks, let's get it merged in!

We could also link to the video of the notebook being presented in the intro? https://www.youtube.com/watch?v=C1JJ33z9g00

[juanitorduz]

This one fell through the cracks, let's get it merged in!

We could also link to the video of the notebook being presented in the intro? https://www.youtube.com/watch?v=C1JJ33z9g00

Done!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.69%. Comparing base (f9a3234) to head (9b6e4b8).
⚠️ Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1585      +/-   ##
==========================================
+ Coverage   81.54%   81.69%   +0.15%     
==========================================
  Files         230      230              
  Lines       53136    52950     -186     
  Branches     9448     9404      -44     
==========================================
- Hits        43329    43260      -69     
+ Misses       7370     7256     -114     
+ Partials     2437     2434       -3     

see 18 files with indirect coverage changes

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[juanitorduz]

I do not know why the extras are not parsing :(

[juanitorduz]

Thanks for the comments @ricardoV94 ! I will come back to this one soon (I did not modify the original notebook much)

[juanitorduz]

I think I have addressed all your comments @ricardoV94 :)

[ricardoV94]

3 small notes. I think it's pretty good already so let me know if you want to integrate them or merge as is

[juanitorduz]

3 small notes. I think it's pretty good already so let me know if you want to integrate them or merge as is

Thank you @ricardoV94 ! I addressed the three suggestions. Please let me know and see if I missed something 🙏

[ricardoV94]

Thanks a ton