feat: add Message#bulkDeletable (#8760)

* feat: add `Message#bulkDeletable`

* feat: add requested changes

* fix: add check for `ManageMessages` permission

* fix: `.permissionsFor()` exist only in guild channels

* feat: apply requested changes

* types: add type

* fix: do not return `undefined`

* fix: add property to docs

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/discord.js/src/structures/Message.js

@@ -22,7 +22,7 @@ const { Sticker } = require('./Sticker');
 const { DiscordjsError, ErrorCodes } = require('../errors');
 const ReactionManager = require('../managers/ReactionManager');
 const { createComponent } = require('../util/Components');
-const { NonSystemMessageTypes } = require('../util/Constants');
+const { NonSystemMessageTypes, MaxBulkDeletableMessageAge } = require('../util/Constants');
 const MessageFlagsBitField = require('../util/MessageFlagsBitField');
 const PermissionsBitField = require('../util/PermissionsBitField');
 const { cleanContent, resolvePartialEmoji } = require('../util/Util');
@@ -611,6 +611,25 @@ class Message extends Base {
     );
   }
 
+  /**
+   * Whether the message is bulk deletable by the client user
+   * @type {boolean}
+   * @readonly
+   * @example
+   * // Filter for bulk deletable messages
+   * channel.bulkDelete(messages.filter(message => message.bulkDeletable));
+   */
+  get bulkDeletable() {
+    const permissions = this.channel?.permissionsFor(this.client.user);
+    return (
+      (this.inGuild() &&
+        Date.now() - this.createdTimestamp < MaxBulkDeletableMessageAge &&
+        this.deletable &&
+        permissions?.has(PermissionFlagsBits.ManageMessages, false)) ??
+      false
+    );
+  }
+
   /**
    * Whether the message is pinnable by the client user
    * @type {boolean}