snapcraft "list-*" subcommands are inconsistent

[rpjday]

Bug Description

snapcraft has a number of subcommands that come in pairs, of the form:

$ snapcraft fubar
$ snapcraft list-fubar

which mostly are consistent, but not totally. The variations I see are:

• plugins
• extensions
• tracks
• revisions
• keys
• validation-sets [sort of]

For the first four, if you run "snapcraft help list-fubar", the output, toward the end, refers the reader to the shorter form, but if you ask for help for the short form, you do not get referred to the longer form (a bit weird).

Next, it seems that the commands "list-keys" and "keys" are equivalent, but the "help" output for the two are entirely different; examine the output of each of:

$ snapcraft help list-keys
$ snapcraft help keys

to appreciate the strangeness.

Finally, for consistency, if there is a "list-validation-sets" subcommand, then there should be a "validation-sets" subcommand.

I can't think of a general rule for consistency for the above, but there should definitely be some consistency.

To Reproduce

Run the various "help" subcommands.

Environment

Ubuntu 22.04 amd64.

snapcraft.yaml

None.

Relevant log output

None.

Additional context

No response