feat: Add "deleted" property to multiple structures. (#2556)

* Add "deleted" property to "Message" structure

* Add "deleted" property to Multiple structures

Structures edited:
- Channel
- Emoji
- Guild
- Guild Member
- Role

* Update "deletable" getter

* Fix ESLint "no-trailing-spaces" errors

* Requested Change: Mark w/ bulkDelete

src/client/actions/GuildDelete.js

@@ -33,6 +33,7 @@ class GuildDeleteAction extends Action {
 
       // Delete guild
       client.guilds.remove(guild.id);
+      guild.deleted = true;
       client.emit(Events.GUILD_DELETE, guild);
       this.deleted.set(guild.id, guild);
       this.scheduleForDeletion(guild.id);