Ipc refactor (#9)

* Start refactoring IPC objects (started with IFile and IFileSystem)

* End refactoring IPC objects (#8)

* End refactoring IPC objects

* End refactoring IPC objects

corrections

Ryujinx/OsHle/Objects/Am/IAudioController.cs

@@ -0,0 +1,20 @@
+using Ryujinx.OsHle.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.OsHle.Objects.Am
+{
+    class IAudioController : IIpcInterface
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public IAudioController()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                //...
+            };
+        }
+    }
+}