Tracking issue: Full integration of Example models

[EwoutH]

With the core examples being merged back into Mesa in #2358 and now available in examples we can now start working our checklist:

• [x] Divide models in stable/basic and experimental/advanced models
• [x] Create two folders in Mesa examples: examples/basic and examples/advanced
• [x] Move over those 9 examples from mesa-examples, retaining git history.
• [ ] Remove from Mesa-examples (@EwoutH, https://github.com/projectmesa/mesa-examples/pull/225
• [ ] Update the examples, to:
  • [ ] Use a standard structure: agents.py, model.py and app.py (@EwoutH, #2331)
    • [ ] basic examples: #2365
  • [ ] Use the latest features and be implemented elegantly
  • [ ] Use the latest visualisation (#2236)'
    • [ ] basic examples: #2365
• [ ] Include them in Read the Docs (@quaquel, like currently on the EMAworkbench)
• [ ] Update all other docs and readmes to point towards the new location
• [ ] Integrate the benchmarks models in them and run benchmarks on them
• [ ] Update the tests to run continuous testing (https://github.com/projectmesa/mesa-examples/pull/215)
• [ ] Add visualisation testing (https://github.com/projectmesa/mesa-examples/pull/215)
• [ ] We add batch_run testing (#2184, #2185, https://github.com/projectmesa/mesa-examples/pull/144)
• [ ] Include examples in coverage

Feel free to add items, and put your name behind something if you want to pick it up!

[quaquel]

I'll pick up the read the docs stuff as discussed today.

[EwoutH]

@quaquel Awesome! #2365 structures all basic example models to have a flat structure and at least agents.py and model.py, I think that should help.