Now works out of the box on Windows MSVC,
prevents settings crash because of nonexistent Wine options,
and also further improves use-cases where you might not
have all the libraries required to build.
Now Astra can bootstrap a new FFXIV it can't find an existing one. It
doesn't even run the installer, but instead extracts the files from the
installer on the fly using unshield. libxiv is now included to handle
this task.
