Chore: Cleanup Peggo

[alexanderbez]

A braindump of changes I'd like to see in Peggo:

• Update README
• Remove dependencies on github.com/InjectiveLabs/sdk-go
• Remove metrics usage (we can replace this with prom later)
• Remove statsd usage
• Replace CLI framework with cobra (chore: refactor CLI framework #3)
• Migrate commands from DNM: peggy contract tools umee#177
• User zerolog logger instead of current logger
• Groom for idiomatic logging (e.g. proper formatting, grammar, capitalization, etc...)
• Remove hard-coded references to injective
• Remove all fmt.Println() in favor of fmt.Fprint* for non-logger diagnostic output
• Remove all errors.Wrap(...) in favor of fmt.Errorf("...: %w", err)
• Fix all golangci-lint errors (per $ make lint)
• Examine Orchestrator implementation
  • Do we need to use an interface?
  • Are there methods or functions we can cleanup or remove?
  • etc...