Recognize Wow-ARM64.exe as valid exe target

[Aerothosis]

When attempting to set the target exe for the WoW ARM64 client (native Windows for ARM client), WoWUP says it's an "invalid" option.

I did a workaround by just making a duplicate of the exe and renaming to just "Wow.exe" and that worked.

My recommendation would be to add "Wow-ARM64.exe" to the list of valid exe target names.