Web API experiment with actix and surrealDB.

Generate doc: `cargo doc --workspace --no-deps --open`

- Oauth2/OpenID JWT token for authentication provided by keycloak, with internal permissions in application
- Easy-to-use cache wrapper, only implements Moka but can be easily extended. [More](framework/src/cache)
- Derive filter structs for surrealDB queries. [More](framework/macros/)
- CRUD API with filtering, and dynamic ID (user can be referenced by either id, oidc_id, or username)