Use the default $HOME/.esy prefix if hardlinking across drives is not a problem

As noted in #21 , hardlinking across drives (say, `C:` to `D:`) is not necessary in all cases. Right now, it's a problem only if user opts into `node_modules` linker.

This action should use the underlying esy binary to figure if hardlinking problem is relevant to the project - if not, it should behave like users expect. ie. place the esy prefix in `$HOME/.esy`.