Add `Debug` bound to `ArraySize` #343

Job	Run time
clippy	20s
miri (s390x-unknown-linux-gnu)	59s
rustfmt	17s
careful	58s
miri (x86_64-unknown-linux-gnu)	53s
build (stable, wasm32-unknown-unknown)	51s
build (stable, armv7a-none-eabi)	49s
build (1.85.0, armv7a-none-eabi)	50s
test (1.85.0)	43s
test (stable)	39s
doc	26s
build (1.85.0, thumbv7em-none-eabi)	53s
build (1.85.0, wasm32-unknown-unknown)	53s
build (stable, thumbv7em-none-eabi)	50s
	10m 21s

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