Support XDG Base Directory Specification

[psnszsn]

Degit should be using $XDG_CACHE_HOME/degit instead of ~/.degit to store downloaded repositories. This keeps users' home directories clean of dotfiles. It is being widely adopted by Linux/BSD applications.

See here for more info.

[x80486]

This could/should be considered a bug these days because the XDG Base Directory Specification has been a (well established) standard for over 10 years or so.

[ZerdoX-x]

Agree. Forced to refuse from degit because of this

[yola-0316]

Currently, degit use https://github.com/Rich-Harris/degit/blob/master/src/utils.js#L127 home-ortmp as a base directory determine way, maybe could use https://www.npmjs.com/package/xdg to instead.