Optional "renaming scheme" to output formats for plex/jellyfin/emby

[ZacharyCarey]

These service require renaming the files/folders in a specific structure (potentially finding tmdb id). Being able to apply some sort of 'template' to the naming and automatically outputting as such would be cool.

[ZacharyCarey]

Make the current renamer have options for other services, and the ability to create custom formats.