Provide GUI interface when running in interactive mode

[pcolmer]

From https://wtvmetarenamer.codeplex.com/workitem/1183:

The idea behind this suggestion is that the script would provide some level of GUI interface when the -interactive flag is used.
 
Initially, for example, this might be limited to presenting the list of matches for an episode in a window so that you can scroll up and down to try to find the one you want. Other possibilities include a GUI progress window and perhaps a GUI interface for managing the configuration XML file.