feat: add amendments enabled on each network

[pdp2121]

High Level Overview of Change

Create a table with the following information to track amendments enabled on each network:

• AmendmentID

• NetworkID

• ledger_index

• tx_hash

• date

Also add a function to manually update the table using a JSON file (runs whenever re-deployed).

Type of Change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Refactor (non-breaking change that only restructures code)
• [ ] Tests (You added tests for code that already exists, or your new feature included in this PR)
• [ ] Documentation Updates
• [ ] Release

Test Plan

Works on staging.