feature request: allow evm_version to be set per network [APE-1045]

[bout3fiddy]

Overview

in ape-config.yaml, allow user to do:

vyper:
    evm_version: shanghai
    arbitrum:
         evm_version: paris

[antazoey]

the first part of this already should work:

vyper:
  evm_version: shanghai

let me know if it doesnt but it was added here: b75ee5d

the second part is a valid refactor request though, however it may look like:

vyper:
  # evm_version: this works but will set it for all ecosystems
  ethereum:
    mainnet:
      evm_version: shanghai
  arbitrum:
    mainnet:
      evm_version: paris

[antazoey]

when using the ecosystem approach, we'd have to cache artifacts accordingly and for each custom settings (because technically you can compile w/o being connected anywhere..

this might take more thought but i can see why this is much needed