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

Ryujinx.Core/OsHle/IpcServices/Pl/ServicePl.cs

@@ -0,0 +1,51 @@
+using Ryujinx.Core.OsHle.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.Core.OsHle.IpcServices.Pl
+{
+    class ServicePl : IIpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public ServicePl()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 1, GetLoadState                 },
+                { 2, GetFontSize                  },
+                { 3, GetSharedMemoryAddressOffset },
+                { 4, GetSharedMemoryNativeHandle  }
+            };
+        }
+
+        public static long GetLoadState(ServiceCtx Context)
+        {
+            Context.ResponseData.Write(1); //Loaded
+
+            return 0;
+        }
+
+        public static long GetFontSize(ServiceCtx Context)
+        {
+            Context.ResponseData.Write(Horizon.FontSize);
+
+            return 0;
+        }
+
+        public static long GetSharedMemoryAddressOffset(ServiceCtx Context)
+        {
+            Context.ResponseData.Write(0);
+
+            return 0;
+        }
+
+        public static long GetSharedMemoryNativeHandle(ServiceCtx Context)
+        {
+            Context.Response.HandleDesc = IpcHandleDesc.MakeCopy(Context.Ns.Os.FontHandle);
+
+            return 0;
+        }
+    }
+}