Implement `From<{&,&mut} [T; N]>` for `Vec<T>` where `T: Clone` Currently, if `T` implements `Clone`, we can create a `Vec<T>` from an `&[T]` or an `&mut [T]`, can we also support creating a `Vec<T>` from an `&[T; N]` or an `&mut [T; N]`? Also, do I need to add `#[inline]` to the implementation? ACP: rust-lang/libs-team#220. [Accepted] Closes #100880.