It was suggested in orbitdb/orbitdb#233 that we should have a daemon mode. I think adding that would be awesome!
I reckon we can start by the "daemon mode" being the same as starting a HTTP API that can be used to interact with OrbitDB. I made a skeleton for that in orbit-db-http-server which we could pull into the CLI. Then, add a new command daemon in src/commands that start the http server.
This would be a good task to work on for someone who's looking to contribute to the project and it shouldn't be too complicated.