feat: add updated_at to modpacks and /api/launcher/modpacks/summary endpoint

cmd/server/main.go

@@ -75,6 +75,7 @@ func main() {
 
 		r.Route("/launcher", func(r chi.Router) {
 			r.Get("/modpacks/{name}/manifest", launcherHandler.GetModpackManifest)
+			r.Get("/modpacks/summary", launcherHandler.GetModpacksSummary)
 		})
 	})
 	r.Route("/authserver", func(r chi.Router) {