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/request-handler/src/traefik.ts

@@ -0,0 +1,15 @@
+import { createIntegrationAsync } from "@homarr/integrations";
+import type { TraefikDashboardData } from "@homarr/integrations/types";
+
+import { createIntegrationRequestHandler } from "./lib/integration-request-handler";
+
+export const traefikRequestHandler = createIntegrationRequestHandler<
+  TraefikDashboardData,
+  "traefik",
+  Record<string, never>
+>({
+  async requestAsync(integration, _input) {
+    const integrationInstance = await createIntegrationAsync(integration);
+    return await integrationInstance.getDashboardDataAsync();
+  },
+});