Extend the API with new methods

Since we are support specifically the "hidden" argument, and because we support adding extra arguments (whatever please the developers), we could extend the API to provide a way to get some values.

Would proposing the following methods make sense:

• openAsHidden() which would return a boolean telling wheteher the app is set to be launched as hidden/in background. It could mimic the method proposed by electron and extend it to all supported platforms.
  • See https://github.com/Teamwork/node-auto-launch/issues/58 for a usecase
  • Should we care if it was launched at login or system wide (if we ever support this option)?
• getArguments() (or getExtraArguments()) would return an array of all the arguments sent to the app at autolaunch.
• toggle() to take care of the logic to enable ou disable autolaunch
  • https://github.com/Teamwork/node-auto-launch/pull/121
• extend disable() method to remove enabled/disabled state in Windows registry.
  • usecase: https://github.com/Teamwork/node-auto-launch/issues/22