new_contents: #!/usr/bin/env python
  from mitmproxy import options, optmanager
  from mitmproxy.tools import dump, console, web
  
  masters = {
      "mitmproxy": console.master.ConsoleMaster,
      "mitmdump": dump.DumpMaster,
      "mitmweb": web.master.WebMaster
  }
  
  for name, master in masters.items():
      opts = options.Options()
      inst = master(opts)
      print(optmanager.dump_dicts(opts))
  
subject: add skeleton for options script