Added new bootcamp course on Problem Solving, Python Programming (#7448)

* Update free-courses-en.md

* Update free-courses-en.md

* Update courses/free-courses-en.md

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

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

courses/free-courses-en.md

@@ -922,6 +922,7 @@
 * [Learn to Program: The Fundamentals](https://www.coursera.org/learn/learn-to-program) (Coursera)
 * [Practical Python: An Immersive Python Course](https://practical.learnpython.dev) - Nina Zakharenko
 * [Practical Python Programming](https://dabeaz-course.github.io/practical-python/) - David Beazley
+* [Problem Solving, Python Programming, and Video Games](https://www.coursera.org/learn/problem-solving-programming-video-games) - Duane Szafron, Paul Lu (Coursera)
 * [Programming, Data Structures And Algorithms Using Python](https://nptel.ac.in/courses/106/106/106106145/) - Prof. Madhavan Mukund (NPTEL)
 * [Programming Foundations with Python](https://www.udacity.com/course/programming-foundations-with-python--ud036) (Udacity)
 * [Python 101 – Introduction to Programming](https://www.tutorialspoint.com/python_101_andndash_introduction_to_programming/index.asp) - Zenva (Tutorials Point)