mod_http_oauth2: Refactor client grant and response type checks Iterating over an array instead of creating a Set ought to create fewer short-lived tables. The arrays are usually very short so shouldn't be a performance issue. Moves validation earlier as to do less work before discovering that it can't proceed anyway.

---
summary: OIDC group membership in UserInfo
labels:
- Stage-Alpha
rockspec:
  dependencies:
  - mod_http_oauth2 >= 200
  - mod_groups_internal
---

This module exposes [mod_groups_internal] groups to
[OAuth 2.0][mod_http_oauth2] clients via a `groups` scope/claim.