Improve Docs for predictive functions

[rohanbabbar04]

Description

• [x] Remove Thebe Functionality #463.
• [ ] Improve the docs to handle optional dependency of bambi and pymc #464 and #462

Checklist

• [x] Code style is correct (follows pylint and black guidelines)
• [x] Includes new or updated tests to cover the new feature
• [x] New features are properly documented (with an example if appropriate)
• [x] Includes a sample plot to visually illustrate the changes (only for plot-related functions)
• [x] Widget states have been properly saved (only for notebooks with widgets) see for details.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.35%. Comparing base (cd776ae) to head (4db5f13). Report is 23 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #468 +/- ## ========================================== + Coverage 80.74% 82.35% +1.61% ========================================== Files 92 96 +4 Lines 7556 7896 +340 ========================================== + Hits 6101 6503 +402 + Misses 1455 1393 -62 ```

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[OriolAbril]

You should also remove the thebe related dependencies and configuration:

• https://github.com/arviz-devs/preliz/blob/main/docs/conf.py#L50
• https://github.com/arviz-devs/preliz/blob/main/docs/conf.py#L60
• https://github.com/arviz-devs/preliz/blob/main/requirements-docs.txt#L4

[aloctavodia]

Oops, I merge this by mistake. You can modify the rest in a separated PR