GetEnv returns the current selected environment Does not take.

SetEnv selects an environment to be used.

SetupCommand includes things that should run for each command.

EnvLocal is a builtin environment, it means services launched with `micro run` will use default, zero dependency implementations for interfaces, like mdns for registry.

EnvPlatform is a builtin environment, the One True Micro Live(tm) environment.

EnvServer is a builtin environment, it represents your local `micro server`.