feat: add shuffle method

src/Player.js

@@ -312,6 +312,24 @@ class Player {
         });
     }
 
+    /**
+     * Shuffles the guild queue.
+     * @param {string} guildID 
+     * @returns {Promise<Void>}
+     */
+    shuffle(guildID){
+        return new Promise(async(resolve, reject) => {
+            // Gets guild queue
+            let queue = this.queues.find((g) => g.guildID === guildID);
+            if(!queue) return reject('Not playing');
+            // Shuffle the queue (except the first song)
+            let currentSong = queue.songs.shift();
+            queue.songs = queue.songs.sort(() => Math.random() - 0.5);
+            queue.songs.unshift(currentSong);
+            // Resolve
+            resolve();
+        });
+    }
     /**
      * Start playing songs in a guild.
      * @ignore

src/Song.js

@@ -6,7 +6,7 @@ class Song {
      * @param {Video} video The Youtube video
      * @param {Queue} queue The queue in which the song is
      */
-    constructor(video, queue) {
+    constructor(video, queue, requestedBy) {
         /**
          * Song name.
          * @type {string}
@@ -47,6 +47,11 @@ class Song {
          * @type {Queue}
          */
         this.queue = queue;
+        /**
+         * The user who requested that song.
+         * @type {User}
+         */
+        this.requestedBy = requestedBy;
     }
 };