Add link_issue.pl to examples

Covering the `remotelink` endpoint:

https://developer.atlassian.com/server/jira/platform/jira-rest-api-for-remote-issue-links/

Author: rwp0

examples/link_issue.pl

@@ -0,0 +1,95 @@
+#!/usr/bin/env perl
+
+use 5.016;
+use utf8;
+use warnings;
+use FindBin;
+use lib "$FindBin::Bin/lib";
+use Getopt::Long::Descriptive;
+use JIRACLI qw/get_credentials/;
+
+my ($opt, $usage) = describe_options(
+    '%c %o',
+    ['jiraurl=s',   "JIRA server base URL", {required => 1}],
+    ['issue|i=s',   "Key of the issue to progress", {required => 1}],
+    ['url|u=s',     "URL of the link", {required => 1}],
+    ['title|t=s',   "Title of the link", {required => 1}],
+    ['help|h',      "Print usage message and exit"],
+    {show_defaults => 1},
+);
+
+if ($opt->help) {
+    print $usage->text;
+    exit 0;
+}
+
+my $jira = JIRA::REST->new(
+    $opt->jiraurl,
+    get_credentials(),
+);
+
+my $link = {
+    object => {
+        url => $opt->url, # eg. 'https://example.com/'
+        title => $opt->title # eg. 'Link to the website'
+    }
+}; # See https://developer.atlassian.com/server/jira/platform/jira-rest-api-for-remote-issue-links/
+
+$jira->POST("/issue/@{[$opt->issue]}/remotelink", undef, $link);
+
+
+__END__
+=encoding utf8
+
+=head1 NAME
+
+link_issue.pl - Link a JIRA issue
+
+=head1 SYNOPSIS
+
+  link_issue.pl [-ghir] [long options...]
+    --jiraurl STR        JIRA server base URL
+    -i STR --issue STR   Key of the issue to progress
+    -u STR --url   STR   URL of the link
+    -t STR --title STR   Title of the link
+    -h --help            Print usage message and exit
+
+=head1 DESCRIPTION
+
+This script adds a link to a JIRA issue.
+
+=head1 OPTIONS
+
+Common options are specified in the L<JIRACLI> documentation. Specific
+options are defined below:
+
+=over
+
+=item * B<--issue STR>
+
+Specifies the issue by its key (e.g. HD-1234).
+
+=item * B<--url STR>
+
+URL of the link.
+
+=item * B<--title STR>
+
+Title of the link.
+
+=back
+
+=head1 ENVIRONMENT
+
+See the L<JIRACLI> documentation.
+
+=head1 COPYRIGHT
+
+Copyright 2019-2024 CPQD.
+
+This program is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself.
+
+=head1 AUTHOR
+
+Elvin Aslanov <rwp.primary@gmail.com>