Core: Allow overriding the enabling of a code

If we want to enable codes in the default game INIs,
we should have some way for users to disable them.
This commit accomplishes that by adding a *_Disabled
section corresponding to each *_Enabled section.

Source/Core/DolphinQt/Config/NewPatchDialog.cpp

@@ -34,7 +34,7 @@ NewPatchDialog::NewPatchDialog(QWidget* parent, PatchEngine::Patch& patch)
   if (m_patch.entries.empty())
   {
     AddEntry();
-    m_patch.active = true;
+    m_patch.enabled = true;
   }
 }