docs: update README.md

Author: sswietoniowski

README.md

@@ -317,6 +317,7 @@ Some useful tools & libraries:
 - TypeScript:
   - [typescriptlang.org](https://www.typescriptlang.org/) [:file_folder:](https://github.com/microsoft/typescript),
   - [jsr.io](https://jsr.io/),
+  - [JSON to TypeScript](https://transform.tools/json-to-typescript),
 - Node.js:
   - [Node.js](https://nodejs.org/en/),
   - 📖 [Node.js - Previous Releases](https://nodejs.org/en/about/previous-releases),