feat: Enable issue edit to read body from stdin

[erpel]

When working with jira I found that setting the body from stdin is not supported in issue edit. It seemed easy to add.

If you're interested in this feature that does not break anything (as far as I can tell) please feel free to accept this MR. I'm of course open to suggestions for anything that can be improved.

[erpel]

While working with this I noticed that setting content from stdin only works with pipes/FIFOs. Redirecting a files content to stdin using shell redirection command < file is not treated as "having data in stdin".
Is there any particular reason for this check? It is in https://github.com/ankitpokhrel/jira-cli/blame/eb842e18014303a575fde8e19508b3c7c13982c5/internal/cmdutil/utils.go#L135

if fi.Mode()&os.ModeNamedPipe == 0 {
		return false
	}

With this removed, both of these work:

jira issue edit IN-4 --no-input < upgrade-clusters.md 
cat upgrade-clusters.md | jira issue edit IN-4 --no-input 

[ankitpokhrel]

Hi @erpel, apologies for the late response.

I don't exactly remember the reason behind this check, TBH. Perhaps it was overlooked when working on the initial feature. I think we can update the method StdinHasData to something like the one below, so that it considers both stdin and file redirection.

import "golang.org/x/crypto/ssh/terminal"

func StdinHasData() bool {
	if terminal.IsTerminal(int(os.Stdin.Fd())) {
		return false
	}
	return true
}

[erpel]

Thanks for looking into this.
I took a look at "golang.org/x/crypto/ssh/terminal" and its IsTerminal function. Since it's just a wrapper around functionality in "golang.org/x/term" which was an indirect dependency already I opted to use this instead. Let me know what you think.

[ankitpokhrel]

This works fine. Thank you!