Adding validator for uiMetadata.

packages/server/src/api/routes/utils/validators.ts

@@ -208,6 +208,11 @@ export function roleValidator() {
       name: Joi.string()
         .regex(/^[a-zA-Z0-9_]*$/)
         .required(),
+      uiMetadata: Joi.object({
+        displayName: OPTIONAL_STRING,
+        color: OPTIONAL_STRING,
+        description: OPTIONAL_STRING,
+      }).optional(),
       // this is the base permission ID (for now a built in)
       permissionId: Joi.string()
         .valid(...Object.values(permissions.BuiltinPermissionID))