Add StatusCode EARLY_HINTS and TOO_EARLY

See https://www.rfc-editor.org/rfc/rfc8297#section-2 and https://www.rfc-editor.org/rfc/rfc8470#section-5.2

Author: Pi-Cla

src/status.rs

@@ -335,6 +335,10 @@ status_codes! {
     /// [[RFC2518](https://tools.ietf.org/html/rfc2518)]
     (102, PROCESSING, "Processing");
 
+    /// 103 Early Hints
+    /// [[RFC8297, Section 2](https://tools.ietf.org/html/rfc8297#section-2)]
+    (103, EARLY_HINTS, "Early Hints");
+
     /// 200 OK
     /// [[RFC7231, Section 6.3.1](https://tools.ietf.org/html/rfc7231#section-6.3.1)]
     (200, OK, "OK");
@@ -462,7 +466,9 @@ status_codes! {
     /// 424 Failed Dependency
     /// [[RFC4918](https://tools.ietf.org/html/rfc4918)]
     (424, FAILED_DEPENDENCY, "Failed Dependency");
-
+    /// 425 Too Early
+    /// [[RFC8470, Section 5.2](https://tools.ietf.org/html/rfc8470#section-5.2)]
+    (425, TOO_EARLY, "Too Early");
     /// 426 Upgrade Required
     /// [[RFC7231, Section 6.5.15](https://tools.ietf.org/html/rfc7231#section-6.5.15)]
     (426, UPGRADE_REQUIRED, "Upgrade Required");