whitelist /joined_rooms in sytest Signed-off-by: Aurabindo Pillai <mail@aurabindo.in> style: fmt feat: implement /joined_rooms (#78) Signed-off-by: Aurabindo Pillai <mail@aurabindo.in> Co-authored-by: Aurabindo Pillai <mail@aurabindo.in> Co-authored-by: timokoesters <timo@koesters.xyz> Reviewed-on: https://git.koesters.xyz/timo/conduit/pulls/155 Reviewed-by: Timo Kösters <timo@koesters.xyz>