uninstall session-counter cleanly

[cantsin]

Partially fulfills #261

• moves .ini to service/ directory since that's where the windows service runs now
• removes windows service log files when we're done
• asks windows service to
  • stop
  • kill the process (if it's a zombie for whatever reason -- this happens often in my testing)
  • uninstall itself

I suspect for a clean uninstall of wireshark and npcap, we're going to have to adjust the installers. the \D option (as seen below) does nothing and we need to know where these are installing so we can call their respective uninstallers. so that's TBD.

[meenubhooshanan]

Sounds good! Looks like we can create a future ticket for uninstalling wireshark and npcap (but I don't think this is high priority)