Workload ID: Add Protos for WorkloadIdentity resource, CRUD and events (

#49650)

* Add protos for resource and resource svc

* Add field for encoding the created/updated workloadidentity in audit
events

* Remove redundant package qualifier

* Add UpsertWorkloadIdentity

* Appease linter

* Add TrimToMaxSize implementation

api/client/events.go

@@ -30,6 +30,7 @@ import (
 	provisioningv1 "github.com/gravitational/teleport/api/gen/proto/go/teleport/provisioning/v1"
 	userprovisioningpb "github.com/gravitational/teleport/api/gen/proto/go/teleport/userprovisioning/v2"
 	usertasksv1 "github.com/gravitational/teleport/api/gen/proto/go/teleport/usertasks/v1"
+	workloadidentityv1pb "github.com/gravitational/teleport/api/gen/proto/go/teleport/workloadidentity/v1"
 	"github.com/gravitational/teleport/api/types"
 	"github.com/gravitational/teleport/api/types/accesslist"
 	accesslistv1conv "github.com/gravitational/teleport/api/types/accesslist/convert/v1"
@@ -135,6 +136,10 @@ func EventToGRPC(in types.Event) (*proto.Event, error) {
 			out.Resource = &proto.Event_IdentityCenterAccountAssignment{
 				IdentityCenterAccountAssignment: r,
 			}
+		case *workloadidentityv1pb.WorkloadIdentity:
+			out.Resource = &proto.Event_WorkloadIdentity{
+				WorkloadIdentity: r,
+			}
 		default:
 			return nil, trace.BadParameter("resource type %T is not supported", r)
 		}
@@ -609,6 +614,9 @@ func EventFromGRPC(in *proto.Event) (*types.Event, error) {
 	} else if r := in.GetIdentityCenterAccountAssignment(); r != nil {
 		out.Resource = types.Resource153ToLegacy(r)
 		return &out, nil
+	} else if r := in.GetWorkloadIdentity(); r != nil {
+		out.Resource = types.Resource153ToLegacy(r)
+		return &out, nil
 	} else {
 		return nil, trace.BadParameter("received unsupported resource %T", in.Resource)
 	}