ADD: added command to add post commit hook

AGIM-f284da79: #closed

lib/App/Git/IssueManager/AddHook.pm

@@ -0,0 +1,35 @@
+package App::Git::IssueManager::AddHook;
+#ABSTRACT: class implementing the Add-Hook command of the GIT IssueManager
+use strict;
+use warnings;
+use MooseX::App::Command;
+extends qw(App::Git::IssueManager);
+use Git::LowLevel;
+use Git::IssueManager;
+use Git::IssueManager::Issue;
+
+use Term::ANSIColor;
+use Try::Tiny;
+
+
+command_short_description 'add the post-commit hook for managing git issues to the repository';
+command_usage 'git issue add-hook';
+
+sub run
+{
+  my $self        = shift;
+
+  die("No .git directory found\n") unless -d ".git";
+  die("A post-commit hook is already installed. Please add hook manually\n") unless ! -e ".git/hooks/post-commit";
+
+  open my $hook,">",".git/hooks/post-commit";
+  print $hook "#!/bin/sh\n";
+  print $hook "git-issue-commit-hook\n";
+  close $hook;
+
+  system("chmod a+x .git/hooks/post-commit");
+
+
+}
+
+1;