Create SendToken on login

flutter/lib/models/keytoken.dart

@@ -40,6 +40,23 @@ class KeyToken {
   }
 }
 
+class KeyTokenWithToken {
+  final KeyToken keyToken;
+  final String token;
+
+  KeyTokenWithToken({
+    required this.keyToken,
+    required this.token,
+  });
+
+  factory KeyTokenWithToken.fromJson(Map<String, dynamic> json) {
+    return KeyTokenWithToken(
+      keyToken: KeyToken.fromJson(json),
+      token: json['token'] as String,
+    );
+  }
+}
+
 class KeyTokenPreview {
   final String keytokenID;
   final String name;