feat: implement user schema management (#7416)

This PR adds the functionality to manage user schemas through the new user schema service.
It includes the possibility to create a basic JSON schema and also provides a way on defining permissions (read, write) for owner and self context with an annotation.

Further annotations for OIDC claims and SAML attribute mappings will follow.

A guide on how to create a schema and assign permissions has been started. It will be extended though out the process of implementing the schema and users based on those.

Note:
This feature is in an early stage and therefore not enabled by default. To test it out, please enable the UserSchema feature flag on your instance / system though the feature service.

internal/query/system_features_test.go

@@ -57,6 +57,10 @@ func TestQueries_GetSystemFeatures(t *testing.T) {
 						context.Background(), aggregate,
 						feature_v2.SystemLegacyIntrospectionEventType, false,
 					)),
+					eventFromEventPusher(feature_v2.NewSetEvent[bool](
+						context.Background(), aggregate,
+						feature_v2.SystemUserSchemaEventType, false,
+					)),
 				),
 			),
 			want: &SystemFeatures{
@@ -75,6 +79,10 @@ func TestQueries_GetSystemFeatures(t *testing.T) {
 					Level: feature.LevelSystem,
 					Value: false,
 				},
+				UserSchema: FeatureSource[bool]{
+					Level: feature.LevelSystem,
+					Value: false,
+				},
 			},
 		},
 		{
@@ -93,6 +101,10 @@ func TestQueries_GetSystemFeatures(t *testing.T) {
 						context.Background(), aggregate,
 						feature_v2.SystemLegacyIntrospectionEventType, false,
 					)),
+					eventFromEventPusher(feature_v2.NewSetEvent[bool](
+						context.Background(), aggregate,
+						feature_v2.SystemUserSchemaEventType, false,
+					)),
 					eventFromEventPusher(feature_v2.NewResetEvent(
 						context.Background(), aggregate,
 						feature_v2.SystemResetEventType,
@@ -119,6 +131,10 @@ func TestQueries_GetSystemFeatures(t *testing.T) {
 					Level: feature.LevelUnspecified,
 					Value: false,
 				},
+				UserSchema: FeatureSource[bool]{
+					Level: feature.LevelUnspecified,
+					Value: false,
+				},
 			},
 		},
 		{
@@ -137,6 +153,10 @@ func TestQueries_GetSystemFeatures(t *testing.T) {
 						context.Background(), aggregate,
 						feature_v2.SystemLegacyIntrospectionEventType, false,
 					)),
+					eventFromEventPusher(feature_v2.NewSetEvent[bool](
+						context.Background(), aggregate,
+						feature_v2.SystemUserSchemaEventType, false,
+					)),
 					eventFromEventPusher(feature_v2.NewResetEvent(
 						context.Background(), aggregate,
 						feature_v2.SystemResetEventType,
@@ -163,6 +183,10 @@ func TestQueries_GetSystemFeatures(t *testing.T) {
 					Level: feature.LevelUnspecified,
 					Value: false,
 				},
+				UserSchema: FeatureSource[bool]{
+					Level: feature.LevelUnspecified,
+					Value: false,
+				},
 			},
 		},
 	}