Appease Clippy 1.68 and refactor http_api (#4068)

## Proposed Changes

Two tiny updates to satisfy Clippy 1.68

Plus refactoring of the `http_api` into less complex types so the compiler can chew and digest them more easily.

Co-authored-by: Michael Sproul <michael@sigmaprime.io>

common/warp_utils/src/lib.rs

@@ -6,3 +6,4 @@ pub mod metrics;
 pub mod query;
 pub mod reject;
 pub mod task;
+pub mod uor;