feat: add logging options

[pekasen]

This adds the following command line options to tegracli:

  -v, --verbose            Logging verbosity.
  -l, --log-file FILENAME  File to log to. Defaults to STDOUT.
  -s, --serialize          Serialize output to JSON.

This allows to extensively set the logging configuration and supports setting the log level, destination (defaulting to STDOUT) and plain text or JSON output.

Closes #53.

[FlxVctr]

You could leave debug/no-debug as a simple on/off switch that defaults to 'ERROR' level. If that's the breaking change you meant in chat.