Enumerate contract artifacts from a factory address

[ryscheng]

What is it?

Currently we only enumerate contracts that are created by deployer address.
We do not detect whether they're a factory and whether that factory in turn creates new contracts.

These should all be artifacts in our data model

[ccerv1]

@ravenac95 I have moved our discussion about the contract verification that we were having with Jonas and Agora into its own issue now. Please add any comments or additional context that may be relevant to that issue.

Separately, my understanding is that this feature should be working now. We just want to test it, eg, by adding a deployer on Base that deployed a factory. If so, we can close this out once we get #1203 to work.