Manpage Make Target

[bagasme]

This PR adds make target for manpage, and also stub (empty) markdown source to generate them.

This issue is part of resolving #11399.

The actual manpage content will be provided in next PR when this PR get merged.

[silverwind]

I think you need to run make vendor and add the new files in the vendor directory.

[bagasme]

@silverwind I don't think vendoring will be appropriate for this. It is similar to misspell target: if go-md2man isn't found, go get it. go-md2man is executable, not library one.

[silverwind]

Ok, I was just wondering about the entry in go.sum but I guess as long as it's not in go.mod, go vendor will not pick it up as a vendoring candidate.

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 months. Thank you for your contributions.

[silverwind]

Would prefer this to land in the same PR with the actual content for #11399.

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 months. Thank you for your contributions.