Collect coverage during init (#1304) #2068

Job	Run time
Build Echidna on ubuntu-20.04	5m 58s
Build Echidna on macos-13	8m 29s
Build Echidna on windows-latest	12m 35s
Test with solc 0.4.25 on ubuntu-latest	3m 18s
Test with solc 0.5.7 on ubuntu-latest	3m 18s
Test with solc 0.6.12 on ubuntu-latest	3m 17s
Test with solc 0.7.5 on ubuntu-latest	3m 23s
Test with solc 0.4.25 on windows-latest	3m 37s
Test with solc 0.5.7 on windows-latest	4m 4s
Test with solc 0.6.12 on windows-latest	3m 37s
Test with solc 0.7.5 on windows-latest	4m 32s
	56m 8s

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