Allow for command-line options shortcuts

Current situation

Some command-line parameters are quite long:

Options:
  --step_depth=1: show nested steps to the given depth.
  --job_depth=1: show nested jobs to the given depth.
  --max_command_length=15: show the first n characters of running commands
  --watch: wait until workflow completion or cancellation, displaying status updates as they occur.
  --output=format or -o format: show information in specified format (json or yaml)

This means their intent is clear, but they are hence cumbersome to type

Desired outcome

Short version for most of those parameters.