Add a reader for role mentionability
Add a reader for role mentionability

VxJasonxV/discordrb,megumisonoda/discordrb,meew0/discordrb,Roughsketch/discordrb,megumisonoda/discordrb,Roughsketch/discordrb,meew0/discordrb,VxJasonxV/discordrb