Add TypeScript Books (#9244)

* Update free-programming-books-ko.md

* Update free-programming-books-ko.md

* Update books/free-programming-books-ko.md
Co-authored-by: NEric Hellman <eric@hellman.net>

* Update books/free-programming-books-ko.md
Co-authored-by: NEric Hellman <eric@hellman.net>
Co-authored-by: NEric Hellman <eric@hellman.net>

books/free-programming-books-ko.md

@@ -34,6 +34,7 @@
 * [Sed](#sed)
 * [Software Engineering](#software-engineering)
 * [Springboot](#springboot)
+* [TypeScript](#typescript)
 * [Unicode](#unicode)
 * [Unity3d](#unity3d)
 
@@ -237,6 +238,15 @@
 * [Springboot 2.X 정리](https://djunnni.gitbook.io/springboot) - 이동준
 
 
+### TypeScript
+
+* [5분 안에 보는 타입스크립트](https://typescript-kr.github.io)
+* [타입스크립트 핸드북](https://joshua1988.github.io/ts) - Captain Pangyo
+* [한눈에 보는 타입스크립트](https://heropy.blog/2020/01/27/typescript) - HEROPY
+Tech
+* [TypeScript Deep Dive](https://radlohead.gitbook.io/typescript-deep-dive)
+
+
 ### Unicode
 
 * [번역 Unicode 이모티콘에 얽힌 이것저것 (이모티콘 표준과 프로그래밍 핸들링)](http://pluu.github.io/blog/android/2020/01/11/unicode-emoji/)