add publishing guidance and pre-publish validation tips

[danielroe]

checklist, dry-run preview, trusted publishing setup guide (actual publishing out of scope)

[serhalp]

e18e has https://e18e.dev/docs/publishing.html. There may be an opportunity to leverage e18e for these. Not sure in form though... linking out, embedding, copying 🤷🏼.

@43081j

[43081j]

we do aim to keep those docs well maintained and up to date, a lot of effort went into writing them (lot of collab too).

so if we can lean on them instead of having to repeat all the same research, that'd be great