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

Ryujinx.HLE/Loaders/ElfSymVisibility.cs

@@ -0,0 +1,10 @@
+namespace Ryujinx.HLE.Loaders
+{
+    enum ElfSymVisibility
+    {
+        STV_DEFAULT   = 0,
+        STV_INTERNAL  = 1,
+        STV_HIDDEN    = 2,
+        STV_PROTECTED = 3
+    }
+}