ApiRoutes => Add exercice enonce endpoint

types/ApiRoutes.ts

@@ -7,6 +7,7 @@ enum ApiRoutes {
     ENONCE_PUBLISH               = '/enonces/{{nameOrUrl}}/publish',
     ENONCE_UNPUBLISH             = '/enonces/{{nameOrUrl}}/unpublish',
     EXERCICE_CREATE              = '/enonces/{{nameOrUrl}}/exercices',
+    EXERCICE_ENONCE              = '/exercices/{{id}}/enonce'
 }