feat(audience-segments): add create subcommand with --filter-file

[notnmeyer]

➜ loops audience-segments create -h

  Create an audience segment

  USAGE


    loops audience-segments create [--flags]


  FLAGS

    --debug        Print API request details before sending
    --description  Segment description
    --filter       Audience filter as an inline JSON string
    --filter-file  Path to a JSON file with the audience filter
    -h --help      Help for create
    -n --name      Segment name
    -o --output    Output format (text, json) (text)
    -t --team      Team key name to use