Add bufo to Slack repo

[knobiknows]

Hi Cal,

Lots of folks have been using my All the bufo repo to do bulk uploads into their Slack. Do you mind if I add the new ones from bufo.zone for easy upload?

[cal-smith]

Hey @knobiknows - totally missed this notification - bufo.zone actually tracks all-the-bufo, so the contents should be identical!

If there are any differences definitely feel free propagate them back to all-the-bufo, but it would be surprising to me if there were any gaps.