Add a minimal example to the generated package

[lyashevska]

Related issues

Closes #299

Checklist

• [x] I am following the contributing guidelines
• [x] Tests are passing
• [x] Lint workflow is passing
• [x] Docs were updated and workflow is passing
• [x] CHANGELOG.md was updated

[codecov[bot]]

Codecov Report

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

Project coverage is 100.00%. Comparing base (8cb70c2) to head (828dcda). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #311 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 2 2 Lines 57 57 ========================================= Hits 57 57 ```

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