Feature Request: Support JWT for authorizations

[afterthought]

This isn't on our short-term list, but I figured I'd record it now. We're exploring multi-tenant usage and would require a way to perform certain request authorizations. I think there are two parts to this for us. In order, 1. authorize a claim from our IDP. This could be done in a proxy if needed. 2. Find some way to map claims to data fusion context that can be used to enforce row level security. Technically this could also be done with a proxy if needed.