Remove logic from redirection server

[whoAbhishekSah]

As of now, the redirection server needs to fetch the code from query params(once the OAuth consent is given) and enrich add workspace in the payload to make a POST call to Siren for the code exchange.
Can we think of trying to remove this logic, and make the flow transparent, where the redirection server can just redirect the request further to Siren and get a response back without needing extra work of payload creation and enrichment.