Improve kernel IPC implementation (#550)

* Implement some IPC related kernel SVCs properly

* Fix BLZ decompression when the segment also has a uncompressed chunck

* Set default cpu core on process start from ProgramLoader, remove debug message

* Load process capabilities properly on KIPs

* Fix a copy/paste error in UnmapPhysicalMemory64

* Implement smarter switching between old and new IPC system to support the old HLE services implementation without the manual switch

* Implement RegisterService on sm and AcceptSession (partial)

* Misc fixes and improvements on new IPC methods

* Move IPC related SVCs into a separate file, and logging on RegisterService (sm)

* Some small fixes related to receive list buffers and error cases

* Load NSOs using the correct pool partition

* Fix corner case on GetMaskFromMinMax where range is 64, doesn't happen in pratice however

* Fix send static buffer copy

* Session release, implement closing requests on client disconnect

* Implement ConnectToPort SVC

* KLightSession init

Ryujinx.HLE/HOS/Kernel/Threading/KScheduler.cs

@@ -210,9 +210,29 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
                 }
             }
 
+            return GetDummyThread();
+
             throw new InvalidOperationException("Current thread is not scheduled!");
         }
 
+        private KThread _dummyThread;
+
+        private KThread GetDummyThread()
+        {
+            if (_dummyThread != null)
+            {
+                return _dummyThread;
+            }
+
+            KProcess dummyProcess = new KProcess(_system);
+
+            KThread dummyThread = new KThread(_system);
+
+            dummyThread.Initialize(0, 0, 0, 44, 0, dummyProcess, ThreadType.Dummy);
+
+            return _dummyThread = dummyThread;
+        }
+
         public KProcess GetCurrentProcess()
         {
             return GetCurrentThread().Owner;