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

Screen.Recording.2025-10-27.at.14.19.26.mov

Changes:

• Create /common/openapi.yaml with basic formatting + user routes & schemas
• Add dependencies for serving open api/swagger ui
• 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