feat: add a free resource for learning rust (#7504)

* feat: add a free resource for learning rust

* update the sort order

courses/free-courses-en.md

@@ -988,6 +988,7 @@
 ### Rust
 
 * [Intro to Rust](https://www.youtube.com/playlist?list=PLJbE2Yu2zumDF6BX6_RdPisRVHgzV02NW) - Tensor Programming
+* [Learn Rust from scratch](https://www.educative.io/courses/learn-rust-from-scratch) - Educative.io
 * [Rust Basics](https://www.youtube.com/playlist?list=PLlcnQQJK8SUjApd95LIcd3K9XXmE-IeCS) - Engineer Man
 * [Rust Crash Course](https://www.youtube.com/watch?v=zF34dRivLOw) - Traversy Media
 * [Rust Programming Tutorial](https://www.youtube.com/playlist?list=PLzMcBGfZo4-nyLTlSRBvo0zjSnCnqjHYQ) - Tech With Tim