WIP: Feature/add keycloak repo

Add the scaffolding for the Keycloak app/package/repo

chart/templates/keycloak/gitrepository.yaml

+{{- if .Values.addons.argocd.enabled  }}
+apiVersion: source.toolkit.fluxcd.io/v1beta1
+kind: GitRepository
+metadata:
+  name: keycloak
+  namespace: {{ .Release.Namespace }}
+spec:
+  ignore: |
+    # exclude file extensions
+    /**/*.md
+    /**/*.txt
+  interval: {{ .Values.flux.interval }}
+  url: {{ .Values.addons.keycloak.git.repo }}
+  ref:
+    {{- include "validRef" .Values.addons.keycloak.git | nindent 4 }}
+{{- if .Values.addons.keycloak.git.secret }}
+  secretRef:
+    name: {{ .Values.addons.keycloak.git.secret | quote }}
+{{- end }}
+{{- end }}