Support injected factory deps

[Karrq]

Users want to be able to inject a factory dep to a given contract, be it for tests or scripts and potentially deployments too.

We used to have this feature (partially) with #310, which was reworked into using information from the compiler in #316, but this is not sufficient when factory deps are not depended upon directly by the factory contract (thus the "injected" adjective)

Tasks:

• Inject factory deps in broadcastable transactions (scripts)
• Inject factory deps in tests
• Inject factory deps in forge create
• Inject factory deps in cast send --create

[Karrq]

#671 will add support for the first 2 sub tasks