set up feature-level filtering

[owades]

Description

This change has no impact to the reports, but enables some upcoming work.

Currently the reports site relies on a single table which contains info only on the GTFS Schedule Compliance checks. In order to enable scalability (and my specific upcoming work of including RT Compliance checks on the reports site), I want to update the table to include all checks, and perform filtering within the reports site infra rather than in the data infra. This change is my first step - once this is merged, I will open up the data data infra table to contain all checks.

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation

How has this been tested?

I ran this and confirmed that the reports continue to load data accurately.

[github-actions[bot]]

Preview url: https://PR-265--cal-itp-reports.netlify.app

[owades]

@charlie-costanzo I'd love to get your review here!

[owades]

Thanks @charlie-costanzo , README updated!