Refactor SVC handler (#540)

* Refactor SVC handler

* Get rid of KernelErr

* Split kernel code files into multiple folders

Ryujinx.HLE/HOS/Kernel/Common/LimitableResource.cs

@@ -0,0 +1,13 @@
+namespace Ryujinx.HLE.HOS.Kernel.Common
+{
+    enum LimitableResource : byte
+    {
+        Memory         = 0,
+        Thread         = 1,
+        Event          = 2,
+        TransferMemory = 3,
+        Session        = 4,
+
+        Count = 5
+    }
+}