Add exercise error type

types/Dojo/DojoStatusCode.ts

@@ -14,7 +14,8 @@ enum DojoStatusCode {
     ASSIGNMENT_CREATION_SONAR_ERROR     = 208,
     EXERCISE_CREATION_GITLAB_ERROR      = 302,
     EXERCISE_CREATION_INTERNAL_ERROR    = 303,
-    MAX_EXERCISE_PER_ASSIGNMENT_REACHED = 304
+    MAX_EXERCISE_PER_ASSIGNMENT_REACHED = 304,
+    EXERCISE_CREATION_SONAR_ERROR       = 305
 }