Replace `os.path` with `Path` and "unzip" with `shutil.unpack_archive`

[LucaMarconato]

@melonora pointed out that this would better generalizes to all platform.

[LucaMarconato]

Do this for all the repos. Checklist.

os.path -> Path

• [ ] spatialdata
• [ ] spatialdata-plot
• [ ] spatialdata-io
• [ ] spatialdata-sandbox
• [ ] spatialdata-notebooks
• [ ] napari-spatialdata

"unzip" -> shutil.unpack_archive

• [ ] spatialdata
• [ ] spatialdata-plot
• [ ] spatialdata-io
• [ ] spatialdata-sandbox
• [ ] spatialdata-notebooks
• [ ] napari-spatialdata