feat(io): implement `Read`, `ReadReady`, `BufRead`, `Write`, and `WriteReady` for `VecDeque<u8>`#697

Dirbaio merged 3 commits intorust-embedded:masterrust-embedded/embedded-hal:masterfrom

hermit-os:io-vec_dequehermit-os/embedded-hal:io-vec_dequeCopy head branch name to clipboard