feat: polls

Added support for polls similar to discord.js v14 (including class, event).
Breaking change: Do not use and remove MessagePoll.

src/structures/Webhook.js

@@ -111,7 +111,7 @@ class Webhook {
 
   /**
    * Options that can be passed into send.
-   * @typedef {BaseMessageOptions} WebhookMessageOptions
+   * @typedef {BaseMessageOptionsWithPoll} WebhookMessageOptions
    * @property {string} [username=this.name] Username override for the message
    * @property {string} [avatarURL] Avatar URL override for the message
    * @property {Snowflake} [threadId] The id of the thread in the channel to send to.