Swap to Symlink deployment for cemu detection

[GingerAvalanche]

Tiny change. The default behavior for emulators should probably be to symlink, barring non-standard setups.

[NiceneNerd]

The main (only?) reason symlinks are not already default in this case is because they're weird on Windows, as it can either only use a directory junction (non-admin, but only works on internal drives) or else requires admin permissions for a real symlink (unless you enable developer mode). Since these are both fairly obnoxious caveats, I'm not sure about using it as a default.

[GingerAvalanche]

Surely it's less annoying to request admin permissions once per external symlink than it would be to force everyone on windows to wait twice as long for the copy to take place, every time?

Vortex already requests admin permissions every single time you deploy (never bothering to try using junctions), and I've never noticed people having a problem with that. I think Mod Organizer is the same.

Maybe it'd be a better idea to just only use junctions internally on Windows, and then catch the resulting "wrong function" error for external links with a message to the user that they need to switch to copy for their setup. Or not run their emulator over an incredibly slow USB transfer interface.

[NiceneNerd]

Let's do it. Junctions will probably work over 80% of the time anyway.