bin: add netrc.sh

Signed-off-by: Emilio G. Cota <cota@braap.org>
mail: move mail to /home/cota/mail

home is encrypted.

Signed-off-by: Emilio G. Cota <cota@braap.org>
fetch_imap: invoke mbsync from /usr/bin

Signed-off-by: Emilio G. Cota <cota@braap.org>
emacs: remove go-mode

Signed-off-by: Emilio G. Cota <cota@braap.org>