Introduce ids as format for user application-password list

[ernilambar]

Feature Request

• Yes, I reviewed the contribution guidelines.

Describe your use case and the problem you are facing

wp user application-password list 1 --format=ids

--format=ids could be helpful for piping commands. It will also bring parity with our listing commands.

Describe the solution you'd like

If output is like 8c4e8d37-7932-4ba4-8459-ead134a3db75 426eeda0-9c2a-4d29-aa7c-1e12c1c07629, it can be helpful when using with xargs.