Get fuzztests running daily in CI #678

Job	Run time
Cross test	1m 35s
Test - msrv toolchain (recent)	1m 39s
Test - nightly toolchain (recent)	5m 27s
Docs - nightly toolchain	1m 36s
Check WASM	37s
Docs - stable toolchain	1m 34s
Test 32-bit version	42s
Bench - nightly toolchain	2m 5s
Lint - nightly toolchain	2m 28s
Test - stable toolchain (recent)	12m 26s
	30m 9s

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