Add crate summaries to README #6474

Job	Run time
Bitrot check	1m 12s
Latest build on ubuntu-latest	1m 0s
Latest build on windows-latest	3m 19s
Latest build on macOS-latest	1m 12s
Build target wasm32-wasi	58s
Build target thumbv7em-none-eabihf	40s
Check ZFuture build on Linux	27s
Check ZFuture build on macOS	49s
Clippy (MSRV)	1m 20s
Check ZFuture build on Windows	3m 1s
Clippy (beta)	16s
Code coverage	1h 24m 41s
Intra-doc links	2m 14s
Rustfmt	18s
protobuf consistency	1m 6s
Test no-Orchard on Linux	4m 33s
Test Orchard on Linux	6m 22s
Test no-Orchard on macOS	6m 7s
Test NU7 on Linux	6m 21s
Test Orchard on macOS	9m 10s
Test no-Orchard on Windows	9m 35s
Test Orchard on Windows	13m 10s
UUID validity	17s
Test NU7 on Windows	13m 15s
Slow Test Orchard on Linux	4m 16s
Slow Test NU7 on Linux	4m 28s
Required status checks have passed	1s
	3h 0m 8s

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