Bump warp and begin axum migration (#9001)

- Bump `warp` to 0.4. This unifies `warp` and `axum` onto the same `http`, `hyper`, `h2`, `rustls`, etc versions.
- Create `axum_utils` which contain common functions and types
- Begins migration of all HTTP API servers from warp to axum


Co-Authored-By: Mac L <mjladson@pm.me>

common/warp_utils/Cargo.toml

@@ -8,7 +8,7 @@ edition = { workspace = true }
 [dependencies]
 bytes = { workspace = true }
 eth2 = { workspace = true }
-headers = "0.3.2"
+headers = "0.4"
 reqwest = { workspace = true }
 safe_arith = { workspace = true }
 serde = { workspace = true }

common/warp_utils/src/status_code.rs

@@ -1,9 +1,10 @@
 use reqwest::StatusCode;
-use warp::Rejection;
 
-/// Convert from a "new" `http::StatusCode` to a `warp` compatible one.
-pub fn convert(code: StatusCode) -> Result<warp::http::StatusCode, Rejection> {
-    code.as_u16().try_into().map_err(|e| {
-        crate::reject::custom_server_error(format!("bad status code {code:?} - {e:?}"))
-    })
+/// Convert a `reqwest::StatusCode` to a `warp::http::StatusCode`.
+///
+/// In warp 0.4, both `reqwest` (0.12) and `warp` use the `http` v1 crate,
+/// so `reqwest::StatusCode` and `warp::http::StatusCode` are the same type.
+/// This function is retained for API compatibility but is now a no-op.
+pub fn convert(code: StatusCode) -> Result<warp::http::StatusCode, warp::Rejection> {
+    Ok(code)
 }