Added helm charts for edge proxy

Added helm secret helm chart for proxy and functionality to add values inside template which are defined inside template. Changed loading secrets from secret.yaml and some small renames for better readability

edge-proxy/templates/configs-configmap.yaml

-{{- if .Values.manifests.configs_configmap }}
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ .Values.name }}-configs
-data:
-  {{- toYaml .Values.configuration | nindent 2 }}
-{{- end }}