office: Rename mail module to office module

Reflecting the somewhat expanding scope of the module, renamed it to
office. Still keeps the old files and setups but also got a new README
file.

office/.config/neomutt/mailcap

@@ -0,0 +1,28 @@
+# open html emails in browser (or whatever GUI program is used to render HTML)
+text/html; xdg-open %s ; nametemplate=%s.html
+# render html emails inline using magic (uncomment the line below to use lynx instead)
+# text/html; lynx -assume_charset=%{charset} -display_charset=utf-8 -collapse_br_tags -dump %s; nametemplate=%s.html; copiousoutput
+text/html; render-prettyhtml %s; nametemplate=%s.html; copiousoutput;
+text/plain; $EDITOR %s ;
+
+# show calendar invites
+text/calendar; mutt-ics; copiousoutput
+application/ics; mutt-ics; copiousoutput
+
+# open images externally
+image/*; nsxiv %s ;
+
+# open videos in mpv
+video/*; mpv --autofit-larger=90\%x90\% %s; needsterminal;
+video/*; setsid mpv --quiet %s &; copiousoutput
+
+# open spreadsheets in sc-im
+application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; sc-im %s; needsterminal
+
+# open anything else externally
+application/pdf; xdg-open %s;
+
+application/*; mkdir -p /tmp/mutt \; cp %s /tmp/mutt \; xdg-open /tmp/mutt/$(basename %s) &
+application/pgp-encrypted; gpg -d '%s'; copiousoutput;
+application/pgp-keys; gpg --import '%s'; copiousoutput;
+