Adds Pandas DF SQL reader and writer

[bryangalindo]

This change introduces an extension of the Pandas read_sql method found (here) and the Pandas to_sql method found (here).

Changes

• examples/pandas/materialization/my_script.py
• examples/pandas/materialization/notebook.ipynb
• examples/pandas/materialization/requirements.txt
• hamilton/io/utils.py
• hamilton/plugins/pandas_extensions.py
• requirements-test.txt
• tests/io/test_utils.py
• tests/plugins/test_pandas_extensions.py
• tests/resources/data/test.db

How I tested this

• Confirmed unit tests for py3.11 passed; locally ran the following command in the root directory: pytest tests/
• Confirmed circleci py37-py3.11 tests all passed.

Notes

N/A

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.

[skrawcz]

Left a few comments & requests. If you could modify the example and add that commit here too that would be great please :)