[FEATURE] Add support for hardlinks on Windows

[tsvl]

Is your feature request related to a problem? Please describe.
Windows does not propagate file change notifications through symlinks, which causes issues with some applications (Windows Terminal I am looking at YOU) needing a restart/manual refresh to see external config edits if the file is symlinked.

Using templates instead of symlinks gets around this issue, but it's not ideal for applications that frequently change their own configs and you have to gotta changes from target -> source back manually. Symlinking the parent folder instead of the config file (I don't think this is currently possible with dotter either? I haven't looked closely on this one) would also work around it, but a lot of applications like to keep logs and other detritus in the same directory as the config files, so it wouldn't be ideal either.

(but other than this dotter is A+++, amazing when software exists that actually does exactly the things I want)