adding xradar-basics notebook

[aladinor]

[x] closes #16

[github-actions]

👋 Thanks for opening this PR! The Cookbook will be automatically built with GitHub Actions. To see the status of your deployment, click below.
🔍 Git commit SHA: b5dbffe
✅ Deployment Preview URL: https://openradar.github.io/erad2024/_preview/59

[kmuehlbauer]

@aladinor Please add this to the toc here:

erad2024/myst.yml

Lines 51 to 64 in 4f71ccf

	toc:
	- file: README.md
	- title: Preamble
	children:
	- file: notebooks/how-to-cite.md
	- title: Data Access
	children:
	- file: notebooks/data-access/intro-data-access.ipynb
	- title: Radar Software Foundations
	children:
	- file: notebooks/xradar-pyart/pyart-basics.ipynb
	- title: Notebook Environment
	children:
	- file: notebooks/environment

[kmuehlbauer]

@aladinor Could you please add the commit from #64 here?

And the same change is needed in CI 'build-book.yaml'. It would be great if you could add it here, too! Thanks!

[aladinor]

@kmuehlbauer let me know if I understood correctly

[kmuehlbauer]

Thanks, works as intended.

[kmuehlbauer]

Thanks @aladinor, nice example.