Grid intersection example

[maxmargraf]

This PR adds an example notebook to the grid intersection functionality.

• is related to Calculate intersection weights of line and grid  #5
• no tests added since it just is an example notebook
• All code checks from pre-commit passed
• Added an entry in the CHANGELOG.md file

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (61c4063) to head (de6a9f9).
Report is 24 commits behind head on main.

Additional details and impacted files

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[cchwala]

Thanks for the PR 👍

Notebook looks great! Also including it in the docs works correctly.

Just one minor comment on the CHANGELOG and one comment on the notebook

This text, which probably stems from the old pycomlink example notebook, is most likely not fitting in the case of the OpenMRG radar data

Note that the lon-lat of the radar grid have been rounded in this example dataset and hence there are some strange pixel size, stemming from the non-equidistant lon-lat grids of the original radar data.

[cchwala]

add PR number

[cchwala]

Thanks! Merging now.