add benchmark for From<[T; N]> in VecDeque
add benchmark for From<[T; N]> in VecDeque

graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust