refactor(GuildMember#manageable): refactored kickable and bannable (#2211)
refactor(GuildMember#manageable): refactored kickable and bannable (#2211)

* refactor(GuildMember#manageable): merged kickable and bannable code

* hydar suggestion

CodeMan99/discord.js,appellation/discord.js,hydrabolt/discord.js,Lewdcario/discord.js,CodeMan99/discord.js,hydrabolt/discord.js,appellation/discord.js,appellation/discord.js,Drahcirius/discord.js,CodeMan99/discord.js,hydrabolt/discord.js,Drahcirius/discord.js,SpaceEEC/discord.js,Lewdcario/discord.js,SpaceEEC/discord.js,SpaceEEC/discord.js,Drahcirius/discord.js,Lewdcario/discord.js