rustlings: move to rust/

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diff --git a/rustlings/exercises/14_generics/README.md b/rustlings/exercises/14_generics/README.md
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-# Generics
-
-Generics is the topic of generalizing types and functionalities to broader cases.
-This is extremely useful for reducing code duplication in many ways, but can call for some rather involved syntax.
-Namely, being generic requires taking great care to specify over which types a generic type is actually considered valid.
-The simplest and most common use of generics is for type parameters.
-
-## Further information
-
-- [Generic Data Types](https://doc.rust-lang.org/book/ch10-01-syntax.html)
-- [Bounds](https://doc.rust-lang.org/rust-by-example/generics/bounds.html)
diff --git a/rustlings/exercises/14_generics/generics1.rs b/rustlings/exercises/14_generics/generics1.rs
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-// `Vec<T>` is generic over the type `T`. In most cases, the compiler is able to
-// infer `T`, for example after pushing a value with a concrete type to the vector.
-// But in this exercise, the compiler needs some help through a type annotation.
-
-fn main() {
-    // TODO: Fix the compiler error by annotating the type of the vector
-    // `Vec<T>`. Choose `T` as some integer type that can be created from
-    // `u8` and `i8`.
-    let mut numbers: Vec<i32> = Vec::new();
-
-    // Don't change the lines below.
-    let n1: u8 = 42;
-    numbers.push(n1.into());
-    let n2: i8 = -1;
-    numbers.push(n2.into());
-
-    println!("{numbers:?}");
-}
diff --git a/rustlings/exercises/14_generics/generics2.rs b/rustlings/exercises/14_generics/generics2.rs
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-// This powerful wrapper provides the ability to store a positive integer value.
-// TODO: Rewrite it using a generic so that it supports wrapping ANY type.
-struct Wrapper<T> {
-    value: T,
-}
-
-// TODO: Adapt the struct's implementation to be generic over the wrapped value.
-impl<T> Wrapper<T> {
-    fn new(value: T) -> Self {
-        Wrapper { value }
-    }
-}
-
-fn main() {
-    // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn store_u32_in_wrapper() {
-        assert_eq!(Wrapper::new(42).value, 42);
-    }
-
-    #[test]
-    fn store_str_in_wrapper() {
-        assert_eq!(Wrapper::new("Foo").value, "Foo");
-    }
-}