Support for multi-part (stacked) movies

I think it would be great to extend the naming convention in order to support multi-part movies.
This is useful for old libraries with CD1/CD2 splitted movies.

When implemented the library will show multi-part movies as a single one.
During playback when CD1 file is finished CD2 file is played automatically.

An example:

/The Dark Knight (2008)
The Dark Knight (2008) - pt1.mp4
The Dark Knight (2008) - pt2.mp4

Plex implementation of this feature:

4 posts were merged into an existing topic: Multi-file movie support