RESTful JSON CRUD - multiple entities

[kylecordes]

Feature idea:

Add a RESTful CRUD example:

• Server, using a library that makes it very easy to create a RESTful JSON API
• UI in front of that server.
• CRUD features - a counter to the numerous examples that only do the "R" in CRUD.

(BTW - I'm a big fan of REST for inter-system APIs, but GraphQL or similar is probably now a better choice for typical web-UI-to-data-server APIs.)

[kylecordes]

This is up and running for one entity type.

To more fully illustrate code with a moderate but not excessive amount of duplication, do the same thing for several more entity types?