feat: custom networks work with explorer

[antazoey]

What I did

Makes it so if you are connecting to an adhoc URL:

ape console --network https://arbitrum-nova.publicnode.com

that it can detect if the etherscan explorer works with this network

How I did it

• Make a new API supports_chain(chain_id: int) -> bool
• Implement the check in ape-etherscan feat: switch to V2 API and implement supported_chain for broader network support ape-etherscan#156 using one of their APIs.

How to verify it

ape console --network https://arbitrum-nova.publicnode.com

then

In [1]: provider.network.explorer
Out[1]: Etherscan(name='etherscan', network=<ethereum:custom chain_id=42170>)

Checklist

• All changes are completed
• New test cases have been added
• Documentation has been updated

[antazoey]

Would like some feedback on this approach before proceeding, but it seems to work! I just kinda wish explorer plugins yielded chain IDs instead of network names