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/MessageDeleteBulk.js

@@ -13,6 +13,7 @@ class MessageDeleteBulkAction extends Action {
       for (const id of ids) {
         const message = channel.messages.get(id);
         if (message) {
+          message.deleted = true;
           messages.set(message.id, message);
           channel.messages.delete(id);
         }