fix: default schema of request parameters

- The bug that `MethodOptionsWithSpec.requestParameters` did not have
  `schema` is fix. They are treated as strings by default.

issue codemonger-io/codemonger#1

Author: kikuomax

src/rest-api-with-spec.ts

@@ -524,6 +524,9 @@ function translateRequestParameters(
         name: parsedKey.name,
         in: parsedKey.location,
         required,
+        schema: {
+          type: 'string',
+        },
       });
     }
   }