feat(adguard,traefik,cert-manager,reloader): foundation for adguard cert sync

- traefik: enable kubernetesIngress provider (needed for cert-manager HTTP-01)
- adguard: add reloader auto annotation for secret-driven restarts
- cert-manager: namespace, helm values (crds), staging+prod ClusterIssuers
- reloader: namespace manifest

adguardhome/k8s/adguard.yaml

@@ -62,6 +62,8 @@ spec:
     metadata:
       labels:
         app: adguard
+      annotations:
+        reloader.stakater.com/auto: "true"
     spec:
       containers:
         - name: adguard