[katana] pass facts registry address to katana init

[glihm]

When working with katana init for provable mode, most of the time in testing the facts registry contract is mocked to always return a valid proof (and avoid long times of proof generation).

This issue aims at requesting a new feature in katana init where we could accept a facts_registry_contract_address for Katana to directly set it during deployment phase.

Or we may pre-register some mock facts registry on known networks.