fix(cli): Refactoring config system

[distractedm1nd]

Our current config system is a nested mess, and we were not able to correctly extract service specific configs while extracting modules into their own crates. The cfg.rs file does everything at once and is very confusing -- it isn't clear what parameters belong to what, and there is no clear separation between the CLI args and the resulting config. Needs quite a heavy refactor

Best path forward will be to read how other big rust projects handle their own configs