UPnP / DLNA support

[Glavin001]

See https://github.com/oeuillot/upnpserver/issues/4

Create UPnP/DLNA server with a virtual directory structure for all movies and TV shows.

Directory Structure:

• Movies/
  • Trailers/ (potential feature)
  • By Name/
  • Movie Name
  • By Year/
  • By Genre/
  • Recently Added/
  • Recently Watched/
• Shows/
  • Show Name/
  • Season #/
    • Episode # - Episode Name

[Glavin001]

Make this a plugin. See #5