Feature Request: Expose runtime/duration as a sort option to Kodi

Hi there,

When browsing a movie library through Jellycon, "Duration" (runtime) is not available as a sort option in Kodi. It's only available with local libraries.

"Date added", "Year," "Genre," etc. are exposed to Kodi as sort options via Jellycon, but not runtime/duration. 

Is it possible for runtime/duration to also be passed through Jellycon to Kodi?