Merge pull request #44 from braintrustdata/ark/devserver-cors-gateway-header

support gateway header in devserver cors

Author: realark

src/main/java/dev/braintrust/devserver/Devserver.java

@@ -57,6 +57,7 @@ public class Devserver {
                     "X-Bt-Project-Id",
                     "X-Bt-Stream-Fmt",
                     "X-Bt-Use-Cache",
+                    "X-Bt-Use-Gateway",
                     "X-Stainless-Os",
                     "X-Stainless-Lang",
                     "X-Stainless-Package-Version",