Benchmarking tool using cost estimator #794

Job	Run time
Intra-doc links	1m 13s
Bitrot check	2m 39s
Build target wasm32-unknown-unknown	1m 23s
Build target wasm32-wasi	1m 17s
Rustfmt	14s
Test on ubuntu-latest with basic features	6m 43s
Test on windows-latest with basic features	8m 25s
Test on macOS-latest with basic features	12m 23s
Test on ubuntu-latest with all features	7m 58s
Test on windows-latest with all features	10m 51s
Test on macOS-latest with all features	14m 28s
	1h 7m 34s

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