Methods in base.py to pull to and from SQL tables, unit tests in test_base.py and successful code formatting and quality checks

[ebuwa-evbuoma-fike]

Summary

Important Note: Work-in-progress #{1599}

Time to review: 10 mins

Changes proposed

• Create db.py, to establish a connection to the database using a SQLAlchemy engine object.
• Create the to_sql and from_sql methods in base.py.
• Set up database configurations.
• Create and validate unit tests in test_base.py.

Context for reviewers

For @widal001 and @AlexanderStephensonUSDS working async.

Additional information

Code formatting and quality checks passed:

[coilysiren]

You can convert this to a draft PR if it is still "work in progress" as the description says

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request

[ebuwa-evbuoma-fike]

You can convert this to a draft PR if it is still "work in progress" as the description says

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request

@coilysiren can draft PRs be viewed? My goal was to make sure Alex could access this

[coilysiren]

@ebuwa-evbuoma-fike

can draft PRs be viewed? My goal was to make sure Alex could access this

Yes draft PRs have the same visibility rules as normal PRs

[acouch]

The code from this PR was adopted during the break with this PR navapbc#72