Adding CrateId Metadata Hash method for Bazel #356

Job	Run time
Cargo bench	5m 59s
Rustfmt	12s
Test (stable, x86_64-unknown-linux-gnu, ubuntu-20.04)	5m 1s
Test (stable, x86_64-fortanix-unknown-sgx, ubuntu-20.04)	2m 59s
Test (stable, x86_64-pc-windows-msvc, windows-latest)	15m 25s
Test (stable, x86_64-pc-windows-msvc, windows-2019)	14m 30s
Test (stable, aarch64-unknown-linux-musl, ubuntu-20.04)	7m 30s
Test (beta, x86_64-unknown-linux-gnu, ubuntu-20.04)	7m 43s
Test (nightly, x86_64-unknown-linux-gnu, ubuntu-20.04)	7m 12s
Test (stable, x86_64-apple-darwin, macos-latest)	6m 34s
ci	2s
	1h 13m 7s

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