Add RAILIANCE-WP-0007: reuse-surface hub Helm chart on railiance01

Companion to reuse-surface REUSE-WP-0011. Scaffold charts/reuse-surface-hub
with PVC, ingress template, values file, and Makefile deploy targets.

charts/reuse-surface-hub/templates/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "reusehub.fullname" . }}
+  labels: {{- include "reusehub.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  selector: {{- include "reusehub.selectorLabels" . | nindent 4 }}
+  ports:
+    - name: http
+      port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP