Will a PR to add some more commands to kvstore be accepted?

I was thinking about adding some subcommands to kvstore.

e.g.:

```
keybase kvstore list --team me,me
keybase kvstore list --team me,me --namespace pw-manager
keybase kvstore add --team me,me --namespace pw-manager --key my-key --value myvalue
```

etc.

Would a PR adding this be accepted?

It think it will ease the commandline usage.

The issue names the keybase kvstore CLI and proposes list and add subcommands with team, namespace, key, and value options. Start by reviewing the existing kvstore command and confirming the accepted scope with maintainers; no file, test, or completion criteria are named.

Written by the indexing model from the issue text.