pr05 Typescript Migration - Followon Project: Swagger / OpenApi documentation & UI for server routes

[clairep94]

Proof of concept: Enable devs to look at open api/swagger documentation site on local dev only

• Follow-on project from the pr05 Typescript Migration
• Currently only contains user routes while other server items are not yet migrated

https://github.com/user-attachments/assets/13f87f8d-fb6b-48eb-9549-67c13873b3ee

Changes:

• [x] Create /common/openapi.yaml with basic formatting + user routes & schemas
• [x] Add dependencies for serving open api/swagger ui
• [x] Add /open-api route to local dev only

I have verified that this pull request:

• [ ] has no linting errors (npm run lint)
• [ ] has no test errors (npm run test)
• [ ] is from a uniquely-named feature branch and is up to date with the develop branch.
• [ ] is descriptively named and links to an issue number, i.e. Fixes #123
• [ ] meets the standards outlined in the accessibility guidelines