RFE: docs: linkify 'podman-foo(1)'

Feature request description

#19695 gave me a taste for how tricky and inconsistent our docs are. We do not have useful doc links. We should.

Any time a doc page says 'podman-foo(1)', it should be a clickable link in the HTML pages. (Man pages, there's nothing we can do).

Suggest potential solution

Sphinx seems to be able to filter: https://github.com/containers/podman/blob/f38668e3220650630d3fab9df490bc1c2849b16e/docs/source/conf.py#L83-L94

It should be possible to do:

    re.sub('podman-foo-paren-N-closeparen', code{if podman-foo.N.md exists, convert to '[podman-foo(N)](podman-foo.N.md)' , else, leave it alone)

Have you considered any alternatives?

Could also be done in hack/markdown-preprocess, but that would only handle .md.in files

Additional context

No response