feat(Message): Add method to resolve a component by id (#6484)

src/structures/Message.js

@@ -817,6 +817,15 @@ class Message extends Base {
     return this.edit({ attachments: [] });
   }
 
+  /**
+   * Resolves a component by a custom id.
+   * @param {string} customId The custom id to resolve against
+   * @returns {?MessageActionRowComponent}
+   */
+  resolveComponent(customId) {
+    return this.components.flatMap(row => row.components).find(component => component.customId === customId) ?? null;
+  }
+
   /**
    * Used mainly internally. Whether two messages are identical in properties. If you want to compare messages
    * without checking all the properties, use `message.id === message2.id`, which is much more efficient. This