feat(movies): create a basic implementation for the movies section

This is a basic implementation that does the following:
* Lists all the movies in the library.
* Listens for movie specific VideoLibrary.* notification.
* Updates the movie list for VideoLibrary.onRemove and VideoLibrary.onUpdate notification.
* A filter for converting XBMC image urls.
feat(movie): [WIP] implement the edit function for the movie section