dbl

inout: add `InOut::into_out` and `InOutBufReserved::into_out` (#1132) #1741

Job	Run time
build (1.81.0, thumbv7em-none-eabi)	17s
build (1.81.0, wasm32-unknown-unknown)	14s
test (1.81.0)	18s
build (stable, thumbv7em-none-eabi)	8s
test (stable)	9s
build (stable, wasm32-unknown-unknown)	7s
minimal-versions / minimal-versions	15s
	1m 28s

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