Add The Concise TypeScript Book (#13448)

Author: gibbok

books/free-programming-books-langs.md

@@ -2647,6 +2647,7 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Essential TypeScript](https://www.programming-books.io/essential/typescript/) - Krzysztof Kowalczyk, StackOverflow Contributors (HTML)
 * [Learn TypeScript in Y Minutes](https://learnxinyminutes.com/docs/typescript/) (HTML)
 * [Tackling TypeScript: Upgrading from JavaScript](https://exploringjs.com/tackling-ts/toc.html) - Axel Rauschmayer (HTML)
+* [The Concise TypeScript Book](https://github.com/gibbok/typescript-book) - Simone Poggiali (HTML, PDF, EPUB) (CC BY)
 * [Total TypeScript: Essentials](https://www.totaltypescript.com/books/total-typescript-essentials) (HTML)
 * [TypeScript Accelerated](https://accelerated.amimetic.co.uk) - James Porter (HTML)
 * [TypeScript Deep Dive](https://basarat.gitbooks.io/typescript/) (HTML)