Adds GeoPandas dataframe support

[skrawcz]

We missed adding this when we removed the "pandas" like dataframe assumption.

Changes

• Adds geopandas plugin

How I tested this

• Runs locally on something that uses geopandas

Notes

Checklist

• PR has an informative and human-readable title (this will be pulled into the release notes)
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality.

[elijahbenizzy]

LGTM