[Rust] Call Vector class from main.

fn main() {
    let v1 = vec![1, 2, 3];
    let v2 = vec![2, 3, 4];

    let vec1 = Vector::<i32>::from_slice(&v1);
    let vec2 = Vector::<i32>::from_slice(&v2);

    // We have to explictly clone our Vector object at present.
    let vec3 = vec1.clone() + vec2.clone();

    println!("{:?}", vec1);
    println!("{:?}", vec2);
    println!("{:?}", vec3);
}