Implement `ArrayEncoding` for `U832` #759

Job	Run time
clippy	15s
build-benchmarks	7m 5s
build (1.65.0, thumbv7em-none-eabi)	4m 6s
cross (aarch64-unknown-linux-gnu, stable)	4m 9s
build (1.65.0, wasm32-unknown-unknown)	5m 41s
doc	17s
cross (powerpc-unknown-linux-gnu, stable)	3m 42s
build (stable, thumbv7em-none-eabi)	29s
dudect	5s
build (stable, wasm32-unknown-unknown)	28s
rustfmt	6s
test (i686-unknown-linux-gnu, 1.65.0, sudo apt update && sudo apt install gcc-multilib)	7m 42s
test (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	1m 36s
test (x86_64-unknown-linux-gnu, 1.65.0)	7m 12s
test (x86_64-unknown-linux-gnu, stable)	2m 8s
	45m 1s

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