Use multiaddr format in CLI

[tzdybal]

Under the hood Rollkit use libp2p, so multiaddr is native format for all addresses. Initially, to mimic normal Cosmos-SDK+Tendermint experience, some CLI parameters was reused (--p2p.laddr and --p2p.seeds), along with Tendermint address format.

The resulting experience is not ideal (see: #378, #520).

Proposed solution:

• [ ] add --optimint.laddr and --optimint.seeds CLI/config options to accept multiaddr values
• [ ] remove --p2p.laddr and --p2p.seeds handling