feat(k8s): add K8s manifests for all homelab services

traefik, gitea, adguard, nextcloud, errorpages, homepages,
uptime-kuma, kener, checkmk, headscale, dockmon, metube,
downtify, portainer, netronome, userbot

Includes Helm values, deployments, services, ingress routes,
configmaps, secrets (placeholders), postgres statefulsets,
kustomize overlays, and Traefik dynamic configuration.

netronome/k8s/config.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: netronome-config
+  namespace: netronome
+data:
+  NETRONOME__DB_TYPE: "postgres"
+  NETRONOME__DB_HOST: "netronome-postgres-service"
+  NETRONOME__DB_PORT: "5432"
+  NETRONOME__DB_NAME: "netronome"
+  NETRONOME__DB_SSLMODE: "disable"
+  NETRONOME__HOST: "0.0.0.0"
+  NETRONOME__PORT: "7575"
+  NETRONOME__BASE_URL: "/"