feat: support api layer and global headers for testcase

internal/builtin/function.go

@@ -211,3 +211,12 @@ func EnsureFolderExists(folderPath string) error {
 	}
 	return nil
 }
+
+func Contains(s []string, e string) bool {
+	for _, a := range s {
+		if a == e {
+			return true
+		}
+	}
+	return false
+}