Added mmbot list installed packages
Merge pull request #179 from andreasohlund/list-installed-packages-command

Added mmbot list installed packages
Using an old school text file to remember dirs to cleanup

This was we don't need a brain to cleanup and can do it on restarts

Making sure we use the base dir so that win services cleans up ok

emoved unused const
Merge pull request #180 from andreasohlund/filebased-nuget-dir-cleanup

NuGet package dir cleanup using a raw text file