Refactor IPC services to have commands into separate classes, fix readme url

Ryujinx.Core/OsHle/IpcServices/Set/ServiceSet.cs

@@ -0,0 +1,46 @@
+using ChocolArm64.Memory;
+using Ryujinx.Core.OsHle.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.Core.OsHle.IpcServices.Set
+{
+    class ServiceSet : IIpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public ServiceSet()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 1, GetAvailableLanguageCodes }
+            };
+        }
+
+        private const int LangCodesCount = 13;
+
+        public static long GetAvailableLanguageCodes(ServiceCtx Context)
+        {
+            int PtrBuffSize = Context.RequestData.ReadInt32();
+
+            if (Context.Request.RecvListBuff.Count > 0)
+            {
+                long  Position = Context.Request.RecvListBuff[0].Position;
+                short Size     = Context.Request.RecvListBuff[0].Size;
+
+                //This should return an array of ints with values matching the LanguageCode enum.
+                byte[] Data = new byte[Size];
+
+                Data[0] = 0;
+                Data[1] = 1;
+
+                AMemoryHelper.WriteBytes(Context.Memory, Position, Data);
+            }
+
+            Context.ResponseData.Write(LangCodesCount);
+
+            return 0;
+        }
+    }
+}