verify slashcommand multiple device-key-pairs

[t3chguy]

so we can send people a single command to verify all our devices

[lampholder]

This might be how we handle this, though I'd like us to think carefully about the overall UX before impling anything

[t3chguy]

If the command supported any number of pairs of arguments then you could send someone a command they run and they magically trust all your devices
also a way of magically generating a command to send to other people via an external medium would make this useful