Add chat and notification logic to DrawableChannel
Add chat and notification logic to DrawableChannel

with alongside multiple helper methods

smoogipoo/osu,ppy/osu,smoogipoo/osu,ppy/osu,smoogipoo/osu,NeoAdonis/osu,peppy/osu,peppy/osu,UselessToucan/osu,peppy/osu,peppy/osu-new,smoogipooo/osu,UselessToucan/osu,UselessToucan/osu,ppy/osu,NeoAdonis/osu,NeoAdonis/osu