refactor: add BigIntFromString to io-ts-types

ticket: WP-6196

TICKET: WP-6196

Author: danielzhao122

modules/express/openapi-generator.rc.js

@@ -13,6 +13,7 @@ module.exports = (E) => {
       Json: () => E.right({ type: 'object', properties: {}, required: [] }),
       NonEmptyString: () => E.right({ type: 'string', minLength: 1 }),
       DateFromISOString: () => E.right({ type: 'string', format: 'date-time' }),
+      BigIntFromString: () => E.right({ type: 'string' }),
     },
     'io-ts-bigint': {
       BigIntFromString: () => E.right({ type: 'string' }),