dig XDG basedir support
Description
Check ${XDG_CONFIG_HOME}/dig/digrc in addition to ~/.digrc
Links / references
https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
Check ${XDG_CONFIG_HOME}/dig/digrc in addition to ~/.digrc
https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html