Helm Charts: add admin and worker to helm charts (#7688)

* add admin and worker to helm charts

* workers are stateless, admin is stateful

* removed the duplicate admin-deployment.yaml

* address comments

* address comments

* purge

* Update README.md

* Update k8s/charts/seaweedfs/templates/admin/admin-ingress.yaml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* address comments

* address comments

* supports Kubernetes versions from v1.14 to v1.30+, ensuring broad compatibility

* add probe for workers

* address comments

* add a todo

* chore: trigger CI

* use port name for probes in admin statefulset

* fix: remove trailing blank line in values.yaml

* address code review feedback

- Quote admin credentials in shell command to handle special characters
- Remove unimplemented capabilities (remote, replication) from worker defaults
- Add security note about admin password character restrictions

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

k8s/charts/seaweedfs/templates/worker/worker-service.yaml

@@ -0,0 +1,26 @@
+{{- if .Values.worker.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "seaweedfs.name" . }}-worker
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "seaweedfs.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/component: worker
+spec:
+  clusterIP: None  # Headless service
+  {{- if .Values.worker.metricsPort }}
+  ports:
+  - name: "metrics"
+    port: {{ .Values.worker.metricsPort }}
+    targetPort: {{ .Values.worker.metricsPort }}
+    protocol: TCP
+  {{- end }}
+  selector:
+    app.kubernetes.io/name: {{ template "seaweedfs.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/component: worker
+{{- end }}