feat: add traefik/gatewayapi (#116)

enable access to charts/containers/api-specs so that we can migrate from
nginx-ingress to gateway api and traefik

Reviewed-on: #116

apps/base/artifactapi/resources/conf.d/remote-helm.yaml

@@ -109,6 +109,17 @@ remotes:
       immutable_ttl: 0
       mutable_ttl: 3600
 
+  traefik:
+    base_url: "https://traefik.github.io/charts"
+    package: "helm"
+    description: "Traefik Helm charts"
+    check_mutable_updates: true
+    immutable_patterns:
+      - "\\.tgz$"
+    cache:
+      immutable_ttl: 0
+      mutable_ttl: 3600
+
   victoriametrics:
     base_url: "https://victoriametrics.github.io/helm-charts/"
     package: "helm"