Benchmarking tool using cost estimator #790

Job	Run time
Intra-doc links	2m 37s
Test on ubuntu-latest with basic features	7m 58s
Bitrot check	3m 55s
Build target wasm32-unknown-unknown	2m 39s
Test on windows-latest with basic features	9m 42s
Build target wasm32-wasi	2m 33s
Rustfmt	17s
Test on macOS-latest with basic features	17m 27s
Test on ubuntu-latest with all features	9m 27s
Test on windows-latest with all features	11m 31s
Test on macOS-latest with all features	19m 13s
	1h 27m 19s

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