Add default_reaction_emoji and default_forum_layout to create_forum

discord/http.py

@@ -1191,6 +1191,8 @@ class HTTPClient:
             'default_auto_archive_duration',
             'default_thread_rate_limit_per_user',
             'default_sort_order',
+            'default_reaction_emoji',
+            'default_forum_layout',
             'available_tags',
         )
         payload.update({k: v for k, v in options.items() if k in valid_keys and v is not None})