platform: etherscan: add support for viaIR #2344

Job	Run time
tests (ubuntu-latest, brownie)	49s
tests (ubuntu-latest, buidler)	37s
tests (ubuntu-latest, dapp)	57s
tests (ubuntu-latest, hardhat)	51s
tests (ubuntu-latest, solc)	17s
tests (ubuntu-latest, truffle)	1m 4s
tests (ubuntu-latest, waffle)	48s
tests (ubuntu-latest, foundry)	29s
tests (ubuntu-latest, standard)	14s
tests (ubuntu-latest, vyper)	43s
tests (ubuntu-latest, solc_multi_file)	21s
tests (ubuntu-latest, hardhat_multi_file)	45s
tests (windows-2022, brownie)	1m 29s
tests (windows-2022, buidler)	1m 29s
tests (windows-2022, hardhat)	2m 48s
tests (windows-2022, solc)	1m 6s
tests (windows-2022, truffle)	4m 26s
tests (windows-2022, waffle)	4m 12s
tests (windows-2022, standard)	57s
tests (windows-2022, vyper)	1m 0s
tests (windows-2022, solc_multi_file)	55s
tests (windows-2022, hardhat_multi_file)	5m 43s
	32m 0s

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