* feat: Implement SKIP_SHORTCUT for installer
* feat: Update Linux install script to use NSIS-based installer instead
* feat: Wine detection for installer shortcut suppression
* fix: Revert WINEPREFIX back to XDG Home
Oops.
* fix(linux): Forgot to use the variable here
* fix(linux): Don't error if INSTALL_LOCATION exists but is empty
* fix(linux): "Program Files" has a space
