Add zod-openapi to ecosystem (#2434)

README.md

@@ -443,6 +443,7 @@ There are a growing number of tools that are built atop or support Zod natively!
 - [`fastify-type-provider-zod`](https://github.com/turkerdev/fastify-type-provider-zod): Create Fastify type providers from Zod schemas.
 - [`zod-to-openapi`](https://github.com/asteasolutions/zod-to-openapi): Generate full OpenAPI (Swagger) docs from Zod, including schemas, endpoints & parameters.
 - [`nestjs-graphql-zod`](https://github.com/incetarik/nestjs-graphql-zod): Generates NestJS GraphQL model classes from Zod schemas. Provides GraphQL method decorators working with Zod schemas.
+- [`zod-openapi`](https://github.com/samchungy/zod-openapi): Create full OpenAPI v3.x documentation from Zod Schemas.
 
 #### X to Zod