refactor(Channels): fix incorrectly shared properties (#6262)

Co-authored-by: Jiralite <33201955+Jiralite@users.noreply.github.com>

src/structures/BaseGuildVoiceChannel.js

@@ -80,6 +80,30 @@ class BaseGuildVoiceChannel extends GuildChannel {
   setRTCRegion(region) {
     return this.edit({ rtcRegion: region });
   }
+
+  /**
+   * Creates an invite to this guild channel.
+   * @param {CreateInviteOptions} [options={}] The options for creating the invite
+   * @returns {Promise<Invite>}
+   * @example
+   * // Create an invite to a channel
+   * channel.createInvite()
+   *   .then(invite => console.log(`Created an invite with a code of ${invite.code}`))
+   *   .catch(console.error);
+   */
+  createInvite(options) {
+    return this.guild.invites.create(this.id, options);
+  }
+
+  /**
+   * Fetches a collection of invites to this guild channel.
+   * Resolves with a collection mapping invites by their codes.
+   * @param {boolean} [cache=true] Whether or not to cache the fetched invites
+   * @returns {Promise<Collection<string, Invite>>}
+   */
+  fetchInvites(cache = true) {
+    return this.guild.invites.fetch({ channelId: this.id, cache });
+  }
 }
 
 module.exports = BaseGuildVoiceChannel;