Refactor to use Cobra for CLI app

[bartekpacia]

This PR is targeted at #376

Progress

• activate [options]
• listen [options]
• list [options] [--details]
• info
  • display [options]
  • lockdown [options]
• image
  • list [options]
  • mount [--path=] [options]
  • auto [--basedir=<where_dev_images_are_stored>] [options]
• syslog [options]
• screenshot [options] [--output=] [--stream] [--port=]
• instruments notifications [options]
• crash
  • ls ls [] [options]
  • cp [options]
  • crash rm [options]
• devicename [options]
• date [options]
• timeformat (24h | 12h | toggle | get) [--force] [options]
• devicestate list [options]
• devicestate enable [options]
• erase [--force] [options]
• lang [--setlocale=] [--setlang=] [options]
• mobilegestalt ... [--plist] [options]
• diagnostics list [options]
• profile list [options]
• prepare [--skip-all] [--skip=]... [--certfile=<cert_file_path>] [--orgname=<org_name>] [--locale] [--lang] [options]
• prepare create-cert
• prepare printskip
• profile
  • remove [options]
  • add [--p12file=] [--password=] [options]
• httpproxy [] [] --p12file= --password= [options]
• httpproxy remove [options]
• pair [--p12file=] [--password=] [options]
• ps [--apps] [options]
• ip [options]
• forward [options]
• dproxy [--binary] [--mode=<all(default)|usbmuxd|utun>] [--iface=] [options]
• readpair [options]
• pcap [options] [--pid=] [--process=]
• install --path= [options]
• uninstall [options]
• apps [--system] [--all] [--list] [--filesharing] [options]
• launch [--wait] [options]
• kill ( | --pid= | --process=) [options]
• runtest [--bundle-id=] [--test-runner-bundle-id=] [--xctest-config=] [--log-output=] [--test-to-run=]... [--test-to-skip=]... [--env=]... [options]
• runwda [--bundleid=] [--testrunnerbundleid=] [--xctestconfig=] [--arg=]... [--env=]... [options]
• ax [options]
• debug [options] [--stop-at-entry] <app_path>
• fsync
  • rm [--r] --path=
  • tree --path=
  • mkdir --path=
  • pull --srcPath= --dstPath=
  • push --srcPath= --dstPath=
• reboot [options]
• -h | --help
• --version | version [options]
• setlocation [options] [--lat=] [--lon=]
• setlocationgpx [options] [--gpxfilepath=]
• resetlocation [options]
• assistivetouch
  • enable [--force] [options]
  • disable [--force] [options]
  • toggle [--force] [options]
  • get [--force] [options]
• voiceover
  • enable [--force] [options]
  • disable [--force] [options]
  • toggle [--force] [options]
  • get [--force] [options]
• zoomtouch (enable | disable | toggle | get) [--force] [options]
• diskspace [options]
• batterycheck [options]
• tunnel start [options] [--pair-record-path=]
• tunnel ls [options]
• devmode
  • enable [--enable-post-restart] [options]
  • get [--enable-post-restart] [options]