Add support for following symbolic links

[delphidabbler]

Currently the Windows version of the program can optionally expand shortcut (.lnk) files that reference another file, but there is no option to follow symbolic links in either Windows or Linux versions.

This could be added using a new --followsymlinks or -S command line option (-s is already used on Windows as an alias for --followshortcuts.

💡 If prepared to break backwards compatibility -s could be changed to reference symlinks, while -S could be used as the new --followshortcuts alias.

[delphidabbler]

It would also be a good idea to alias the cumbersome --followshortcuts command with the clearer --follow-shortcuts.