feat: support to install fastgpt via helm chart (#1023)

* feat: support to install fastgpt via helm chart

Signed-off-by: rick <LinuxSuRen@users.noreply.github.com>

---------

Signed-off-by: rick <LinuxSuRen@users.noreply.github.com>
Co-authored-by: rick <LinuxSuRen@users.noreply.github.com>

files/helm/fastgpt/templates/service.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "fastgpt.fullname" . }}
+  labels:
+    {{- include "fastgpt.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      {{- if .Values.service.nodePort }}
+      nodePort: {{ .Values.service.nodePort }}
+      {{- end}}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "fastgpt.selectorLabels" . | nindent 4 }}