hybrid-array: Added serde impls for `Array` #1521

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	4m 32s
build (1.65.0, wasm32-unknown-unknown)	4m 38s
build (stable, thumbv7em-none-eabi)	16s
test (1.65.0)	4m 36s
test (stable)	20s
build (stable, wasm32-unknown-unknown)	16s
	14m 38s

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