Flesh out MovieData class and use it for Mongo insertion

[audiodude]

We have a MovieData dataclass where we store information taken from Wikidata. However, we also have information taken from the Netflix data set (netflix_id, title, year) that should be part of the class.

Once it's all in there, we can do movie.asdict() to convert the data class into a dictionary object, which can be put directly into Mongo.