Implement MoveId command

Sources/MpcNET/Commands/Playlist/MoveIdCommand.cs

@@ -0,0 +1,52 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="AddCommand.cs" company="MpcNET">
+// Copyright (c) MpcNET. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+namespace MpcNET.Commands.Playlist
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Moves the song with FROM (songid) to TO (playlist index) in the playlist.
+    /// If TO is negative, it is relative to the current song in the playlist (if there is one)
+    /// https://www.musicpd.org/doc/protocol/queue.html.
+    /// </summary>
+    public class MoveIdCommand : IMpcCommand<string>
+    {
+        private readonly int from;
+        private readonly int to;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MoveIdCommand"/> class.
+        /// </summary>
+        /// <param name="from">From (songid)</param>
+        /// <param name="to">To (playlist index)</param>
+        public MoveIdCommand(int from, int to)
+        {
+            this.from = from;
+            this.to = to;
+        }
+
+        /// <summary>
+        /// Serializes the command.
+        /// </summary>
+        /// <returns>
+        /// The serialize command.
+        /// </returns>
+        public string Serialize() => string.Join(" ", "moveid", from, to);
+
+        /// <summary>
+        /// Deserializes the specified response text pairs.
+        /// </summary>
+        /// <param name="response">The response.</param>
+        /// <returns>
+        /// The deserialized response.
+        /// </returns>
+        public string Deserialize(IReadOnlyList<KeyValuePair<string, string>> response)
+        {
+            return string.Join(", ", response);
+        }
+    }
+}