feat: More complete type hints for open_czi and create_czi

[pgarrison]

[x] I followed the How to structure your PR.
[ ] Based on Commit Parsing: In case a new major release will be created (because the body or footer begins with 'BREAKING CHANGE:'), I created a new Jupyter notebook with a matching version.
[ ] Based on Commit Parsing: In case a new minor/patch release will be created (because PR title begins with 'feat'/('fix' or 'perf')), I optionally created a new Jupyter notebook with a matching version.
[ ] In case of API changes, I updated API.md.

Issue

If a user does the following, the most narrow inferred type for file is Any, but file is a CziReader.

from pylibCZIrw import czi

with czi.open_czi(file_path) as file:
    file

Changes

Specify yield type for open_czi and create_czi

Testing

• I ran mypy
• When using the example above, Pylance now infers CziReader for file.

[sebi06]

Good idea. Looks fine to me.

[pgarrison]

@sebi06 Before this can be merged, you'll have to click "Approve workflows to run" to allow CI to start.

https://docs.github.com/en/actions/managing-workflow-runs-and-deployments/managing-workflow-runs/approving-workflow-runs-from-public-forks