Fix databased config save performance
Fix databased config save performance

Adds proper save debounce logic. Closes #5991.
johnneijzen/osu,NeoAdonis/osu,ZLima12/osu,EVAST9919/osu,NeoAdonis/osu,smoogipoo/osu,UselessToucan/osu,ppy/osu,2yangk23/osu,2yangk23/osu,UselessToucan/osu,NeoAdonis/osu,peppy/osu,smoogipoo/osu,ZLima12/osu,EVAST9919/osu,ppy/osu,peppy/osu-new,peppy/osu,ppy/osu,UselessToucan/osu,peppy/osu,smoogipoo/osu,smoogipooo/osu,johnneijzen/osu