duplicate cli commands.

[bsutton]

The cli tooling has:

lockbox vault publish
lockbox vault share publish

These are the same commands.

We also have
lockbox vault receive
lockbox vault share receive

I wonder if we should have:

lockbox vault identity publish [identity]
lockbox contact receive [share code]

The share command also has a delete token option - but I think this is unnecessary as pubilc keys are public by nature so there should never be a need to retract a key in the interval between a publish and a receive. If at some point we feel that we need the remove command then it could be 'lockbox value identity retract [token].

This would mean that we can lose the 'lockbox vault share' set of commands all together.