Fixes an issue where most uses just had their color determined by their
username length and distributes the colors a bit more evenly.

I think old clang-format is just buggy in those cases, so we should
reenable those blocks, once everyone has 13 or up.

Either by accepting an invite or manually using /converttodm and revert
with /converttoroom.

fixes #317

The transceiver was made private in
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2241

The direction property was added here:
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/commit/28b0be4036ac59d6e6068586ab7bc55e8ac51166

fixes #674

Fixes messages in room flickering and being stuck

fixes #760
relates to #770
relates to #789

fixes #776
fixes #590

This was a bit of a journey:
https://github.com/matrix-org/matrix-doc/pull/3471
But it should work now and we now use the UIAHandler everywhere.

fixes #670

fixes #751

fixes #754