Turn Private PoC into "Internal HIA FAQ"

[elwinschmitz]

Follow up of: #843
Details: #843 (comment)

Tasks

Beta Give feedback

1. Setup short URL (bit.ly link for now)
2. Create / move sheets in Google Drive
3. Add new sheet "Working on the helpline"
4. Rename "PoC"-references to "NLRC Internal FAQ" (or similar)
5. Move EU/UM to public-FAQ
6. Update documentation?
7. Add schedule to build/publish workflow (1@end-of-day)
8. Configure ENV details (+theming)
9. Store credentials of (new) service-google-account in Bitwarden
10. Prepare "invite flow" / user-access-management (together with NLRC?)
11. Create Function-app to check for valid @redcross-users
12. Add Dashboard with (default) metrics?
13. Add front-door page