feat(panettone): Bring back + fix irccat issue creation announcement

This reverts commit e1067b1497.

The original issue here was misusing ISSUE-ID instead of ID, but also
the associated username for the message should've been CN instead of DN

Change-Id: I1629c0cb7597ff2ee2867f27870378eecdafe126
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2125
Tested-by: BuildkiteCI
Reviewed-by: eta <eta@theta.eu.org>

web/panettone/src/packages.lisp

@@ -7,6 +7,10 @@
   (:use :cl :lass)
   (:export :styles))
 
+(defpackage panettone.irc
+  (:use :cl :usocket)
+  (:export :send-irc-notification))
+
 (defpackage :panettone.authentication
   (:nicknames :authn)
   (:use :cl :panettone.util :klatre)
@@ -47,5 +51,6 @@
    :id :subject :body :author-dn :issue-id :status :created-at
    :field :previous-value :new-value :acting-user-dn
    :issue-comments :num-comments :issue-events)
+  (:import-from :panettone.irc :send-irc-notification)
   (:shadow :next)
   (:export :start-pannetone :config :main))