feature: Extract movies and casts from projectors

[n0samu]

The director-files-extract script can do this. I should integrate it with Cast Ripper to make it easier to use.

The challenge: I need to receive and parse the command-line output of the script to know what files it extracted. I can use Shell Xtra for that. I also need to think about what happens if the script tries to overwrite an existing file. Might need to modify the script or extract to an empty folder as an intermediate step.