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

Ryujinx.HLE/OsHle/Exceptions/GuestBrokeExecutionException.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Ryujinx.HLE.OsHle.Exceptions
+{
+    public class GuestBrokeExecutionException : Exception
+    {
+        private const string ExMsg = "The guest program broke execution!";
+
+        public GuestBrokeExecutionException() : base(ExMsg) { }
+    }
+}