Rename Ryujinx.Core to Ryujinx.HLE and add a separate project for a future LLE implementation

Ryujinx.HLE/OsHle/Services/Nv/NvHostCtrl/NvHostEventState.cs

@@ -0,0 +1,10 @@
+namespace Ryujinx.HLE.OsHle.Services.Nv.NvHostCtrl
+{
+    enum NvHostEventState
+    {
+        Registered = 0,
+        Waiting    = 1,
+        Busy       = 2,
+        Free       = 5
+    }
+}