NEV-41, we now have an oauth2 flow for authentication against ARender Previewer.
This mechanism stores access token in memory which is a blocker for having ARender Previewer in HA.
We want to implement the Spring Security interface OAuth2AuthorizedClientService to bring the NCO DB (probably DynamoDB) support for sharing access token/user authentication across several previewers.
We need to have a mechanism to correctly configure this part. This should follows what has been done in