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

Ryujinx.HLE/OsHle/Services/Am/MessageInfo.cs

@@ -0,0 +1,9 @@
+namespace Ryujinx.HLE.OsHle.Services.Am
+{
+    enum MessageInfo
+    {
+        FocusStateChanged      = 0xf,
+        OperationModeChanged   = 0x1e,
+        PerformanceModeChanged = 0x1f
+    }
+}