Allow for the `op-node` L2 genesis generation to use either
hardhat artifacts or the `.deploy` L1Deployments JSON file
that is created by the solidity deployment script. While adding
extra logic, this makes genesis generation much easier to be
consumed by the solidity scripts. It also sets up the ability
to deprecate the need for maintaining hardhat deploy style
artifacts. This will allow us to remove a lot of solidity code
and remove the need to call `sync()` to generate the artifacts.
The artifacts make less sense now, especially since it is planned
to have one set of implementation contracts for the entire superchain.
There isn't as much of a need to keep around artifacts for many
contracts separated by network when they are shared between
different L2s.