Competitive programming course Added (#7533)

* Competitive programming course Added

* Update free-courses-hi.md

* Update free-courses-hi.md

* fix: adapt resource info

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

courses/free-courses-hi.md

@@ -117,6 +117,7 @@
 * [C++ Programming in Hindi](https://www.youtube.com/playlist?list=PLDA2q3s0-n15yszaZ2yRKEoxY-WWkuAt4) - Sumit Bisht (Edutainment 1.0)
 * [C++ Programming in Hindi](https://www.youtube.com/playlist?list=PLbGui_ZYuhijXuOfBSdQgK296Y7wUDWLn) - Rajesh Kumar, Geeky Shows
 * [C++ Programming Tutorial in Hindi](https://www.youtube.com/playlist?list=PLoVVmGDgrrnS5_TiSg193ezTPd-Ukb25k) - Rakesh Roshan, Learn TechToTech
+* [C++ STL \| Competitive Programming](https://youtube.com/playlist?list=PLauivoElc3gh3RCiQA82MDI-gJfXQQVnn) - Luv
 * [C++ Tutorial For Begineers In Hindi](https://www.youtube.com/playlist?list=PLnSDvcENZlwA6YDSfoieM1bl-Y3ALcnL5) - Abhishek Shrivastava, Micro Solution
 * [C++ Tutorial for Beginners \| C++ Tutorials In Hindi](https://www.youtube.com/playlist?list=PLmGElG-9wxc8VMy1nNHDQldH2dU8Y08s7) - Manish Gehlot, WsCube Tech Programming Concepts
 * [C++ Tutorials In Hindi](https://www.youtube.com/playlist?list=PLu0W_9lII9agpFUAlPFe_VNSlXW5uE0YL) - CodeWithHarry