From 35e107e87dcd510698a674d3a5d93db9dbf455f9 Mon Sep 17 00:00:00 2001
From: Hocuri <hocuri@gmx.de>
Date: Mon, 7 Jul 2025 11:42:02 +0200
Subject: [PATCH] api!: Add InBroadcastChannel, OutBroadcastChannel chattypes,
 add create_broadcast_channel() (#6901)

In https://github.com/chatmail/core/pull/6901, I unfortunately forgot to
document the API change when squash-merging, so, I'm doing this with the
PR here.

The API change is breaking because not adapting to the new channel types
would lead to errors.