Grid intersection example

[maxmargraf]

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

• [x] is related to #5
• [x] no tests added since it just is an example notebook
• [x] All code checks from pre-commit passed
• [x] Added an entry in the CHANGELOG.md file

[codecov[bot]]

Codecov Report

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

Project coverage is 100.00%. Comparing base (61c4063) to head (de6a9f9). Report is 16 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #54 +/- ## ========================================== Coverage 100.00% 100.00% ========================================== Files 3 4 +1 Lines 43 253 +210 ========================================== + Hits 43 253 +210 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[cchwala]

Thanks! Merging now.