chore: use x-stainless headers (#174)

Author: dgellow

dist/build.js

@@ -39,12 +39,11 @@ export function getStainlessClient(
   };
 
   if (action) {
-    const actionPath = `stainless-api/upload-openapi-spec-action/${action}`;
-    if (isGitLabCI()) {
-      headers["X-GitLab-CI"] = actionPath;
-    } else {
-      headers["X-GitHub-Action"] = actionPath;
-    }
+    headers["X-Stainless-Platform"] = isGitLabCI()
+      ? "gitlab-ci"
+      : "github-actions";
+    headers["X-Stainless-Action"] =
+      `stainless-api/upload-openapi-spec-action/${action}`;
   }
 
   return new Stainless({