Implement NGC service (#5681)

* Implement NGC service

* Use raw byte arrays instead of string for _wordSeparators

* Silence IDE0230 for _wordSeparators

* Try to silence warning about _rangeValuesCount not being read on SparseSet

* Make AcType enum private

* Add abstract methods and one TODO that I forgot

* PR feedback

* More PR feedback

* More PR feedback

src/Ryujinx.Horizon/Ngc/NgcIpcServer.cs

@@ -0,0 +1,51 @@
+using Ryujinx.Horizon.Ngc.Ipc;
+using Ryujinx.Horizon.Sdk.Fs;
+using Ryujinx.Horizon.Sdk.Ngc.Detail;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+using System;
+
+namespace Ryujinx.Horizon.Ngc
+{
+    class NgcIpcServer
+    {
+        private const int MaxSessionsCount = 4;
+
+        private const int PointerBufferSize = 0;
+        private const int MaxDomains = 0;
+        private const int MaxDomainObjects = 0;
+        private const int MaxPortsCount = 1;
+
+        private static readonly ManagerOptions _options = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+
+        private SmApi _sm;
+        private ServerManager _serverManager;
+        private ProfanityFilter _profanityFilter;
+
+        public void Initialize(IFsClient fsClient)
+        {
+            HeapAllocator allocator = new();
+
+            _sm = new SmApi();
+            _sm.Initialize().AbortOnFailure();
+
+            _profanityFilter = new(fsClient);
+            _profanityFilter.Initialize().AbortOnFailure();
+
+            _serverManager = new ServerManager(allocator, _sm, MaxPortsCount, _options, MaxSessionsCount);
+
+            _serverManager.RegisterObjectForServer(new Service(_profanityFilter), ServiceName.Encode("ngc:u"), MaxSessionsCount);
+        }
+
+        public void ServiceRequests()
+        {
+            _serverManager.ServiceRequests();
+        }
+
+        public void Shutdown()
+        {
+            _serverManager.Dispose();
+            _profanityFilter.Dispose();
+        }
+    }
+}