Restore postgres from backup github action

[RMcVelia]

Context

Create a reusable action to restore a postgres database from a previous backup

Changes proposed in this pull request

Add restore-postgres-backup action

Guidance to review

see test run (tba)

Checklist

• [ ] I have performed a self-review of my code, including formatting and typos
• [ ] I have cleaned the commit history
• [ ] I have added the Devops label
• [ ] I have attached the pull request to the trello card

[RMcVelia]

DR - restore postgres from backup github action