Some updates to the frontent

lib/api/grpc/creds.dart

@@ -14,4 +14,8 @@ class SoftplayerCredsHelpers {
   String localStorageEntry(String key) => window.localStorage[key]!;
   SoftplayerCreds fromLocalStorage() => SoftplayerCreds(
       token: localStorageEntry("token"), uuid: localStorageEntry("uuid"));
+  void cleanupLocalStorate() {
+    window.localStorage.remove("token");
+    window.localStorage.remove("uuid");
+  }
 }