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/shared/_helpers.tpl

@@ -83,6 +83,26 @@ Inject extra environment vars in the format key:value, if populated
 {{- end -}}
 {{- end -}}
 
+{{/* Return the proper admin image */}}
+{{- define "admin.image" -}}
+{{- if .Values.admin.imageOverride -}}
+{{- $imageOverride := .Values.admin.imageOverride -}}
+{{- printf "%s" $imageOverride -}}
+{{- else -}}
+{{- include "common.image" . }}
+{{- end -}}
+{{- end -}}
+
+{{/* Return the proper worker image */}}
+{{- define "worker.image" -}}
+{{- if .Values.worker.imageOverride -}}
+{{- $imageOverride := .Values.worker.imageOverride -}}
+{{- printf "%s" $imageOverride -}}
+{{- else -}}
+{{- include "common.image" . }}
+{{- end -}}
+{{- end -}}
+
 {{/* Return the proper volume image */}}
 {{- define "volume.image" -}}
 {{- if .Values.volume.imageOverride -}}
@@ -136,6 +156,15 @@ Inject extra environment vars in the format key:value, if populated
 {{- end -}}
 {{- end -}}
 
+{{/* check if any Admin PVC exists */}}
+{{- define "admin.pvc_exists" -}}
+{{- if or (eq .Values.admin.data.type "persistentVolumeClaim") (eq .Values.admin.logs.type "persistentVolumeClaim") -}}
+{{- printf "true" -}}
+{{- else -}}
+{{- printf "" -}}
+{{- end -}}
+{{- end -}}
+
 {{/* check if any InitContainers exist for Volumes */}}
 {{- define "volume.initContainers_exists" -}}
 {{- if or (not (empty .Values.volume.idx )) (not (empty .Values.volume.initContainers )) -}}