Building Block APIs Docs Refresh

[nyemade-uversky]

Description: Current docs for the Building Block APIs could use a refresh. Current docs are a bit stale and could use some edits to bring them up to date. This effort will be done over the course of time as bandwidth becomes available. This issue will serve as a record for which docs have already been updated.

Docs to Refresh:

• [x] Service Invocation #2419
• [x] State Management #2463
• [x] Publish & Subscribe #2413
• [x] Bindings #2588
• [ ] Secrets
• [ ] Actors
• [ ] Observability
• [ ] Management
• [ ] Configuration