arrow

ARROW-10832: [Rust] [Arrow] generate src/ipc/gen/* with latest snapshot flatc.

I managed to regenerate the code by snapshot flatc, because flatc 1.12.0 does not work.
Both `cargo test` and `cargo doc` passed.

Closes #8859 from mqy/master

Authored-by: mqy <meng.qingyou@gmail.com>
Signed-off-by: Neville Dipale <nevilledips@gmail.com>