docs: add tapiduck to API libraries

README.md

@@ -417,6 +417,7 @@ There are a growing number of tools that are built atop or support Zod natively!
 - [`domain-functions`](https://github.com/SeasonedSoftware/domain-functions/): Decouple your business logic from your framework using composable functions. With first-class type inference from end to end powered by Zod schemas.
 - [`@zodios/core`](https://github.com/ecyrbe/zodios): A typescript API client with runtime and compile time validation backed by axios and zod.
 - [`express-zod-api`](https://github.com/RobinTail/express-zod-api): Build Express-based APIs with I/O schema validation and custom middlewares.
+- [`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.
 
 #### Form integrations