Add helm chart

helm/mautrix-whatsapp/templates/NOTES.txt

@@ -0,0 +1,12 @@
+Your registration file is below. Save it into a YAML file and give the path to that file to synapse:
+
+id: {{ .Values.appservice.id }}
+as_token: {{ .Values.appservice.asToken }}
+hs_token: {{ .Values.appservice.hsToken }}
+namespaces:
+    users:
+        - exclusive: true
+          regex: "@{{ .Values.bridge.username_template | replace "{{.}}" ".+"}}:{{ .Values.homeserver.domain }}"
+url: {{ .Values.appservice.address }}
+sender_localpart: {{ .Values.appservice.botUsername }}
+rate_limited: false