[feature] Comments for steps

[hoopyfrood]

Version and OS
v0.48.5 on docker

Is your feature request related to a problem? Please describe.
I would love to attach comments to each step.

Describe the solution you'd like
An optional textbox just above the three buttons in each step. Even expandable, so it doesn't take too much step. Happy for it to be limited in length so as to not blow up the db.

Describe the use-case and give concrete real-world examples
To provide more context, help me remember the why behind the step or record possible gotchas. Think DNS records' comments on Cloudflare.

Additional context

Thanks!