feat: add rust interactive book

* Update index.md

Added an interactive web doc form which im learning rust.

* Update src/data/roadmaps/rust/content/100-introduction/index.md

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Co-authored-by: Arik Chakma <arikchangma@gmail.com>

src/data/roadmaps/rust/content/100-introduction/index.md

@@ -5,3 +5,4 @@ Rust is a modern system programming language focused on performance, safety, and
 - [@official@Rust by Example](https://doc.rust-lang.org/stable/rust-by-example/index.html)
 - [@official@Official Website](https://www.rust-lang.org/)
 - [@opensource@Rust Book](https://edu.anarcho-copy.org/Programming%20Languages/Rust/rust-programming-language-steve-klabnik.pdf)
+- [@opensource@Rust Book Interactive](https://rust-book.cs.brown.edu/experiment-intro.html)