feat: Allow reusing same shared IpcSharedMem for transfers #147

Job	Run time
aarch64-apple-darwin	1m 0s
aarch64-apple-darwin force-inprocess	1m 20s
aarch64-apple-darwin async	1m 23s
x86_64-apple-darwin	2m 26s
x86_64-apple-darwin force-inprocess	1m 20s
x86_64-apple-darwin async	1m 37s
x86_64-unknown-linux-gnu	1m 18s
x86_64-unknown-linux-gnu force-inprocess	1m 34s
x86_64-unknown-linux-gnu async	1m 12s
x86_64-pc-windows-msvc	2m 13s
x86_64-pc-windows-msvc force-inprocess	1m 44s
x86_64-pc-windows-msvc async	2m 24s
i686-pc-windows-msvc	1m 50s
i686-pc-windows-msvc force-inprocess	3m 7s
i686-pc-windows-msvc async	2m 11s
x86_64-pc-windows-msvc windows-shared-memory-equality	1m 55s
i686-pc-windows-msvc windows-shared-memory-equality	3m 8s
x86_64-unknown-linux-gnu memfd	1m 16s
Result	1s
	32m 59s

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