fix: inherit consumes/produces from swagger root (#104)

Author: vwong

src/compare/setup.ts

@@ -59,6 +59,12 @@ export function setupRouter(
       if (parameters.length) {
         operation.parameters = parameters;
       }
+      (operation as OpenAPIV2.OperationObject).consumes ||= (
+        oas as OpenAPIV2.Document
+      ).consumes;
+      (operation as OpenAPIV2.OperationObject).produces ||= (
+        oas as OpenAPIV2.Document
+      ).produces;
       operation.security ||= oas.security;
       router.on(
         method.toUpperCase() as HTTPMethod,