* Add authlib gRPC authenticators for in-proc mode
* implement `StaticRequester` signing in the unified resource client
- [x] when the `claims.AuthInfo` value type is `identity.StaticRequester`, and there's no ID token set, create an internal token and sign it with symmetrical key. This is a workaround for `go-jose` not offering the possibility to create an unsigned token.
- [x] update `IDClaimsWrapper` to support the scenario above
- [x] Switch to using `claims.From()` in `dashboardSqlAccess.SaveDashboard()`
---------
Co-authored-by: gamab <gabriel.mabille@grafana.com>
* Refactor identity struct to store type in separate field
* Update ResolveIdentity to take string representation of typedID
* Add IsIdentityType to requester interface
* Use IsIdentityType from interface
* Remove usage of TypedID
* Remote typedID struct
* fix GetInternalID
