Add configuration to program

[atoulme]

Add a way to consume a configuration file using YAML that can be interpreted by the program.

[adam-hanna]

https://github.com/agencyenterprise/gossip-host/blob/develop/internal/config/defaults/config.default.json

[adam-hanna]

@araskachoi can we close?

[araskachoi]

let's keep this open for now because we might need to edit some of the configurations (or add). Let's keep this one live until further notice