feat: impl `Async Read/Write Rent` for File #677

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	4m 35s
test (x86_64-unknown-linux-gnu, nightly)	5m 6s
test (aarch64-unknown-linux-gnu, stable)	1m 52s
test (aarch64-unknown-linux-gnu, nightly)	3m 2s
test (armv7-unknown-linux-gnueabihf, stable)	1m 40s
test (armv7-unknown-linux-gnueabihf, nightly)	3m 8s
test (riscv64gc-unknown-linux-gnu, stable)	1m 40s
test (riscv64gc-unknown-linux-gnu, nightly)	5m 19s
test (s390x-unknown-linux-gnu, stable)	1m 39s
test (s390x-unknown-linux-gnu, nightly)	3m 1s
test (x86_64-apple-darwin, stable)	1m 19s
test (x86_64-apple-darwin, nightly)	4m 3s
test (aarch64-apple-darwin, stable)	2m 40s
test (aarch64-apple-darwin, nightly)	3m 10s
test (x86_64-pc-windows-gnu, stable)	4m 24s
test (x86_64-pc-windows-gnu, nightly)	3m 29s
test (x86_64-pc-windows-msvc, stable)	6m 18s
test (x86_64-pc-windows-msvc, nightly)	4m 53s
test (i686-pc-windows-gnu, stable)	6m 36s
test (i686-pc-windows-gnu, nightly)	9m 5s
test (i686-pc-windows-msvc, stable)	3m 2s
test (i686-pc-windows-msvc, nightly)	5m 29s
	1h 25m 30s

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