multimedia/py-trakit: New port: Guess additional information from track titles

TrakIt is a track name parser. It is a tiny library created to solve a very
specific problem. It's very common that video files do not have precise
metadata information, where you can have multiple subtitle tracks tagged as
e.g., Portuguese, but one of them is actually Brazilian Portuguese

WWW: https://github.com/ratoaq2/trakit

This port is a dependency of multimedia/py-subliminal port update (wip).