Resubmit a stored event as a new undelivered event (closes #250)

internal/server/routes.go

@@ -213,6 +213,18 @@ func (s *Server) setupSourceRoutes() {
 			"/deliveries/{deliveryID}/replay",
 			s.h.HandleDeliveryReplay(),
 		)
+		// Resubmit is the other page action that queues outbound
+		// work: it copies a stored event into a new one and fans
+		// that out to every currently active target. It is
+		// deliberately repeatable, so the rate limit is the only
+		// bound on a held-down button; it gets its own bucket so
+		// that spending it does not also disable replay. POST
+		// only, so the action cannot be taken by a link, a
+		// prefetch or an image tag.
+		r.With(s.mw.ResubmitRateLimit()).Post(
+			"/events/{eventID}/resubmit",
+			s.h.HandleEventResubmit(),
+		)
 		r.Post(
 			"/entrypoints",
 			s.h.HandleEntrypointCreate(),