feat(chart): add Helm chart for deploying Label Studio with PostgreSQL (#152)

* feat(chart): add Helm chart for deploying Label Studio with PostgreSQL

* feat(milvus): update Milvus configuration to use URI and remove deprecated host/port settings

deployment/helm/label-studio/templates/service.yaml

@@ -0,0 +1,23 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "label-studio.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "label-studio.name" . }}
+    helm.sh/chart: {{ include "label-studio.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+      {{- if and (eq .Values.service.type "NodePort") .Values.service.nodePort }}
+      nodePort: {{ .Values.service.nodePort }}
+      {{- end }}
+  selector:
+    app.kubernetes.io/name: {{ include "label-studio.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+