hybrid-array: Added serde impls for `Array` #1519

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	5m 12s
test (1.65.0)	4m 58s
build (1.65.0, wasm32-unknown-unknown)	5m 51s
test (stable)	20s
build (stable, thumbv7em-none-eabi)	22s
build (stable, wasm32-unknown-unknown)	13s
	16m 56s

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