Decoders command + test. Still to Assert response depending on build server.

LibMpc/Types/MpdDecoderPlugin.cs

@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+
+namespace LibMpc.Types
+{
+    public class MpdDecoderPlugin
+    {
+        public static readonly MpdDecoderPlugin Empty = new MpdDecoderPlugin(string.Empty);
+
+        private readonly IList<string> _suffixes = new List<string>();
+        private readonly IList<string> _mediaTypes = new List<string>();
+
+        public MpdDecoderPlugin(string name)
+        {
+            name.CheckNotNull();
+
+            Name = name;
+            IsInitialized = !string.IsNullOrEmpty(name);
+        }
+
+        public string Name { get; }
+        public IEnumerable<string> Suffixes => _suffixes;
+        public IEnumerable<string> MediaTypes => _mediaTypes;
+
+        internal bool IsInitialized { get; }
+
+        internal void AddSuffix(string suffix)
+        {
+            _suffixes.Add(suffix);
+        }
+
+        internal void AddMediaType(string type)
+        {
+            _mediaTypes.Add(type);
+        }
+    }
+}