Add API library (#3814)

Add oas-tszod-gen to API libraries section.

README.md

@@ -492,6 +492,7 @@ There are a growing number of tools that are built atop or support Zod natively!
 - [`tapiduck`](https://github.com/sumukhbarve/monoduck/blob/main/src/tapiduck/README.md): End-to-end typesafe JSON APIs with Zod and Express; a bit like tRPC, but simpler.
 - [`koa-zod-router`](https://github.com/JakeFenley/koa-zod-router): Create typesafe routes in Koa with I/O validation using Zod.
 - [`zod-sockets`](https://github.com/RobinTail/zod-sockets): Zod-powered Socket.IO microframework with I/O validation and built-in AsyncAPI specs
+- [`oas-tszod-gen`](https://github.com/inkognitro/oas-tszod-gen): Client SDK code generator to convert OpenApi v3 specifications into TS endpoint caller functions with Zod types.
 
 #### Form integrations