need some consolewritingservice thing for writing to the console

[shiggan]

most of the cli will output messages to the console; provide feedback about 'stuff' happenning; and in specific circumstances output content from the server e.g. sq list schema ... drops information about all schemas to the console.

ideally

• ability to validate the output of messages via integration test

  when we validate list-schema we confirm the content we write to the console is correct

• ability to push up some 'were working on something' context; mabye some spinner ??

purely write only; the interactive console (interactive input output loop) comes in some mythical future version