[desktop] fix save data location, orphaned profiles finder (#2678)

Previously, if the user had their NAND in a nonstandard location,
profiles.dat would be read from the standard Eden path and thus return
effectively garbage data. What this would result in is:

- The Qt profile manager would be completely nonfunctional
- "Open Save Data Location" would put you into the completely wrong
  place
- Games would read from incorrect locations for their saves

To solve this, I made it so that profiles.dat is re-read *after*
QtConfig initializes. It's not the perfect solution, but it works.

Additionally, this adds an orphaned profiles finder:
- walks through the save folders in nand/user/save/000.../
- for each subdirectory, checks to see if profiles.dat contains a
  corresponding UUID
- If not, the profile is "orphaned". It may contain legit save data, so
  let the user decide how to handle it (famous last words)
- Empty profiles are just removed. If they really matter, they're
  instantly recreated anyways.

The orphaned profiles check runs right *after* the decryption keys
check, but before the game list ever gets populated

Signed-off-by: crueter <crueter@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2678
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

src/qt_common/qt_game_util.h

@@ -52,6 +52,7 @@ bool MakeShortcutIcoPath(const u64 program_id,
 void OpenEdenFolder(const Common::FS::EdenPath &path);
 void OpenRootDataFolder();
 void OpenNANDFolder();
+void OpenSaveFolder();
 void OpenSDMCFolder();
 void OpenModFolder();
 void OpenLogFolder();
@@ -67,7 +68,7 @@ void RemoveCustomConfiguration(u64 program_id, const std::string& game_path);
 void RemoveCacheStorage(u64 program_id);
 
 // Metadata //
-void ResetMetadata();
+void ResetMetadata(bool show_message = true);
 
 // Shortcuts //
 void CreateShortcut(const std::string& game_path,