Added a Compiler Design Course in Hindi (#11548)

* Added a Compiler Design Course in Hindi

* Update free-courses-hi.md

courses/free-courses-hi.md

@@ -250,6 +250,7 @@
 
 ### Compiler Design
 
+* [Compiler Design](https://www.youtube.com/playlist?list=PL1QH9gyQXfguPNDTsnG90W2kBDQpYLDQr) - The Gatehub
 * [Compiler Design](https://www.youtube.com/playlist?list=PL9FuOtXibFjVR-87LcU-DS-9TJcbG97_p) - Abhishek Sharma
 * [Compiler Design](https://www.youtube.com/playlist?list=PL23dd-8zssJBiyntds3X1sVWUDeb0Aa1N) - Start Practicing
 * [Compiler Design (Complete Playlist)](https://www.youtube.com/playlist?list=PLmXKhU9FNesSmu-_DKC7APRoFkaQvGurx) - KnowledgeGATE by Sanchit Sir