feat: Add Traefik Integration with dedicated widget and Add optional Icons for Gotify/Notifcation Widget (ONLY GOTIFY) (#6206)

Co-authored-by: Thomas <thomas@ajnart.fr>

packages/definitions/src/docs/integration-doc-slugs.ts

@@ -50,6 +50,7 @@ export const integrationDocSlugs: Record<IntegrationKind, string | null> = {
   gluetun: "gluetun",
   peaNut: "peanut",
   beszel: "beszel",
+  traefik: "traefik",
   archiveTeamWarrior: null,
   mock: null,
 };