feat: Add output formats, for using in other apps

[stripsior]

This pull request adds support for machine-readable output formats (JSON and CSV) to the paping tool, along with new options to control output verbosity. The changes introduce new command-line flags, refactor output functions to handle different formats, and add helper functions for proper escaping in JSON and CSV outputs.

Output format and verbosity enhancements:

• Added a new OutputFormat enum and corresponding field in the Config struct to support human, json, and csv output formats, selectable via the --format command-line option. Also added --silent and --stats-only flags to suppress per-probe and/or banner/target output. [1] [2]
• Updated the print_probe and print_stats functions to output results and summary statistics in the selected format (human-readable, JSON, or CSV), using new helper functions for JSON and CSV escaping. [1] [2] [3] [4]
• Modified the main program flow to respect the new output and verbosity options, including printing CSV headers when appropriate and suppressing output as requested. [1] [2] [3] [4]

Code structure and usability improvements:

• Refactored banner and target printing to respect new output and verbosity options, ensuring clean output for machine-readable formats and silent modes. [1] [2]
• Improved argument parsing with helpers for string and integer extraction, and added validation for the new format and verbosity flags.

[stripsior]

I don't have time to test this on my machine, as I'm leaving literally in 10 minutes for trip