Horizon: Migrate usb and psc services (#5800)

* Horizon: Migrate Usb and Psc services

* Fix formatting

* Adresses feedback

src/Ryujinx.Horizon/Psc/PscMain.cs

@@ -0,0 +1,17 @@
+namespace Ryujinx.Horizon.Psc
+{
+    class PscMain : IService
+    {
+        public static void Main(ServiceTable serviceTable)
+        {
+            PscIpcServer ipcServer = new();
+
+            ipcServer.Initialize();
+
+            serviceTable.SignalServiceReady();
+
+            ipcServer.ServiceRequests();
+            ipcServer.Shutdown();
+        }
+    }
+}