Add eWeLink CUBE OS chart

Bridges eWeLink Wi-Fi and Zigbee devices into Matter (HomeKit,
Google Home, Alexa, Home Assistant). Uses a Multus macvlan interface
instead of hostNetwork, since CUBE OS hardcodes host port 80/1883
which would otherwise collide with Traefik on the same node.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BU7b2w8XZPbD7uXRfjKwcm

cubeos/templates/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}
+  labels:
+    app.kubernetes.io/name: {{ .Chart.Name }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+spec:
+  type: {{ .Values.service.type }}
+  selector:
+    app: {{ .Release.Name }}
+  ports:
+    - name: http
+      port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP