Add marimo progress bar for pymc sampler

[williambdean]

Description

The rich progress bars don't work well in marimo notebooks. Here is a basic implementation using their progress bar component to track the pymc sampler.

An implementation note: tasks being attached to the progress bar and progress bar manager is a bit confusing, but I tried to keep as lean as possible to get to work.

https://github.com/user-attachments/assets/04607b16-70a0-4e1b-9692-3bda981934ab

Related Issue

• [ ] Closes #
• [ ] Related to #

Checklist

• [ ] Checked that the pre-commit linting/style checks pass
• [ ] Included tests that prove the fix is effective or that the new feature works
• [ ] Added necessary documentation (docstrings and/or example notebooks)
• [ ] If you are a pro: each commit corresponds to a relevant logical change

Type of change

• [ ] New feature / enhancement
• [ ] Bug fix
• [ ] Documentation
• [ ] Maintenance
• [ ] Other (please specify):

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📚 Documentation preview 📚: https://pymc--7883.org.readthedocs.build/en/7883/