Setup --stdout and -y options where it makes sense.

[ice-breaker-tg]

Anything that exports a file, make it able to be piped/etc using --stdout flag. Anything with prompt/etc allow --yes/-y flags.

• [x] import-settings
• [x] export-settings
• [ ] list (--stdout should do non-pretty, tab seperated)
• [ ] accounts (--stdout should do non-pretty, tab seperated)
• [ ] inspect-car (--stdout should work for all subsets/flags)