Move helm templates into folders (#7113)

* refactor: move helm templates into respective service folders

* fix: update template path reference in filer-statefulset for s3-secret

k8s/charts/seaweedfs/templates/shared/service-account.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ .Values.global.serviceAccountName }}
+  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 }}
+automountServiceAccountToken: {{ .Values.global.automountServiceAccountToken }}