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MpMcQueue: add `MpMcQueueView`, similar to `VecView` #788

Job	Run time
clippy	41s
doc (x86_64-unknown-linux-gnu)	22s
check (x86_64-unknown-linux-gnu)	32s
doc (thumbv7m-none-eabi)	28s
check (i686-unknown-linux-musl)	39s
style	12s
check (riscv32imc-unknown-none-elf)	28s
check (armv7r-none-eabi)	50s
test	28s
check (thumbv6m-none-eabi)	31s
testcfail	56s
check (thumbv7m-none-eabi)	49s
testcpass (x86_64-unknown-linux-gnu)	24s
check (thumbv8m.base-none-eabi)	1m 20s
testcpass (x86_64-unknown-linux-gnu, --release)	22s
testmiri	1m 4s
check (thumbv8m.main-none-eabi)	1m 4s
testcpass (i686-unknown-linux-musl)	25s
testcpass (i686-unknown-linux-musl, --release)	10s
testtsan (x86_64-unknown-linux-gnu)	34s
testtsan (x86_64-unknown-linux-gnu, --release)	48s
	13m 7s

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