Allow to enable/disable memory checks even on release mode through the flag, return error for invalid addresses on SvcMap*Memory svcs, do not return error on SvcQueryMemory (instead, return reserved for the end of the address space), other minor tweaks

Ryujinx.Core/OsHle/Horizon.cs

@@ -52,6 +52,8 @@ namespace Ryujinx.Core.OsHle
             HidHandle = Handles.GenerateId(HidSharedMem);
 
             FontHandle = Handles.GenerateId(new HSharedMem());
+
+            HidSharedMem.AddVirtualPosition(0);
         }
 
         public void LoadCart(string ExeFsDir, string RomFsFile = null)