Horizon: Migrate usb and psc services (#5800)

* Horizon: Migrate Usb and Psc services

* Fix formatting

* Adresses feedback

src/Ryujinx.Horizon/Srepo/Ipc/SrepoService.cs

@@ -0,0 +1,8 @@
+using Ryujinx.Horizon.Sdk.Srepo;
+
+namespace Ryujinx.Horizon.Srepo.Ipc
+{
+    partial class SrepoService : ISrepoService
+    {
+    }
+}

src/Ryujinx.Horizon/Srepo/SrepoIpcServer.cs

@@ -0,0 +1,46 @@
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+using Ryujinx.Horizon.Srepo.Ipc;
+
+namespace Ryujinx.Horizon.Srepo
+{
+    class SrepoIpcServer
+    {
+        private const int SrepoAMaxSessionsCount = 2;
+        private const int SrepoUMaxSessionsCount = 30;
+        private const int TotalMaxSessionsCount = SrepoAMaxSessionsCount + SrepoUMaxSessionsCount;
+
+        private const int PointerBufferSize = 0x80;
+        private const int MaxDomains = 32;
+        private const int MaxDomainObjects = 192;
+        private const int MaxPortsCount = 2;
+
+        private static readonly ManagerOptions _options = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+
+        private SmApi _sm;
+        private ServerManager _serverManager;
+
+        public void Initialize()
+        {
+            HeapAllocator allocator = new();
+
+            _sm = new SmApi();
+            _sm.Initialize().AbortOnFailure();
+
+            _serverManager = new ServerManager(allocator, _sm, MaxPortsCount, _options, TotalMaxSessionsCount);
+
+            _serverManager.RegisterObjectForServer(new SrepoService(), ServiceName.Encode("srepo:a"), SrepoAMaxSessionsCount); // 5.0.0+
+            _serverManager.RegisterObjectForServer(new SrepoService(), ServiceName.Encode("srepo:u"), SrepoUMaxSessionsCount); // 5.0.0+
+        }
+
+        public void ServiceRequests()
+        {
+            _serverManager.ServiceRequests();
+        }
+
+        public void Shutdown()
+        {
+            _serverManager.Dispose();
+        }
+    }
+}

src/Ryujinx.Horizon/Srepo/SrepoMain.cs

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