feat: detect eip-1167 and legacy vyper proxies

[banteg]

What I did

Added support for EIP-1167 and Vyper create_forwarder_to proxies when using Contract.from_explorer.

Related issue: #

How I did it

I match the bytecode and replace the address to fetch from explorer if a minimal proxy pattern is detected. This adds an additional eth_getCode call.

How to verify it

eip_1167 = Contract.from_explorer('0x9528b97E7495A78325517744B2edBE0150310311')
old_vyper = Contract.from_explorer('0xb32747B4045479B77a8b8Eb44029ba12580214F8')

Checklist

• I have confirmed that my PR passes all linting checks
• I have included test cases
• I have updated the documentation
• I have added an entry to the changelog

[iamdefinitelyahuman]

Please lint and then should be gtg

[fubuloubu]

Some failures here: https://github.com/eth-brownie/brownie/pull/984/checks?check_run_id=2059704686

[iamdefinitelyahuman]

Fails are happening from a change in solc 0.8.2 that broke functionality elsewhere. It needs fixing, but it's unrelated to this PR so shouldn't be a blocker to merge.

[banteg]

Black made this a bit ugly, force-pushed the formatting it suggested.