hybrid-array: Added serde impls for `Array` #1532

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	5m 6s
build (1.65.0, wasm32-unknown-unknown)	4m 36s
build (stable, thumbv7em-none-eabi)	20s
build (stable, wasm32-unknown-unknown)	15s
test (1.65.0)	4m 32s
test (stable)	15s
minimal-versions / minimal-versions	31s
	15m 35s

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