feat(auth): add AWS SigV4 authentication and bucket policy support

rust/src/s3_error.rs

@@ -1,6 +1,4 @@
-use hyper::{Response, StatusCode};
-use http_body_util::Full;
-use bytes::Bytes;
+use hyper::StatusCode;
 
 #[derive(Debug, thiserror::Error)]
 #[error("S3Error({code}): {message}")]
@@ -105,14 +103,4 @@ impl S3Error {
             self.code, self.message
         )
     }
-
-    pub fn to_response(&self, request_id: &str) -> Response<Full<Bytes>> {
-        let xml = self.to_xml();
-        Response::builder()
-            .status(self.status)
-            .header("content-type", "application/xml")
-            .header("x-amz-request-id", request_id)
-            .body(Full::new(Bytes::from(xml)))
-            .unwrap()
-    }
 }