Config: Port AutoUpdate settings to new config system.

Source/Core/UICommon/AutoUpdate.h

@@ -4,6 +4,7 @@
 #pragma once
 
 #include <string>
+#include <string_view>
 
 // Refer to docs/autoupdate_overview.md for a detailed overview of the autoupdate process
 
@@ -14,7 +15,7 @@ class AutoUpdateChecker
 public:
   // Initiates a check for updates in the background. Calls the OnUpdateAvailable callback if an
   // update is available, does "nothing" otherwise.
-  void CheckForUpdate();
+  void CheckForUpdate(std::string_view update_track, std::string_view hash_override);
 
   static bool SystemSupportsAutoUpdates();