feat(web/panettone): Redirect to created issue after creation.

Fixes: b/54
Change-Id: I5ae6c8aa2a4448554a8ba4cb41185ada1ecf8cb0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5784
Autosubmit: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

web/panettone/src/panettone.lisp

@@ -485,7 +485,8 @@ given subject an body (in a thread, to avoid blocking)"
                  (id issue))
          :channel (or (uiop:getenvp "ISSUECHANNEL")
                       "#tvl"))
-        (hunchentoot:redirect "/"))))
+        (hunchentoot:redirect
+         (format nil "/issues/~A" (id issue))))))
 
 (defroute show-issue
     ("/issues/:id" :decorators (@auth-optional @handle-issue-not-found @db))