Add multi-network specification to `ape safe` mgmt commands

[fubuloubu]

Overview

SafeAccount's JSON cache file supports multiple deployed_chain_ids, but there's currently no way to support specifying multiple deployments when adding a safe. Would be nice to have some way of doing that.

Specification

Some ideas:

• Support allowing multiple --network <eco>:<net> flags for ape safe add command such that we can grab their chain IDs and put them into the cache file.
• Fetch all deployed chain IDs from Safe API somehow? (not sure if it has this info)

Dependencies

n/a

[linear]

APE-2014