movie metadata, fill in director, studio, writers and country

[CuddleBear92]

Movie metadata has some missing fields that could see some filling in Plex.

• Studio (studio Ghibli for example)
• Director (Hayao Miyazaki for example)
• Country
• Writers (if possible)

all of these are important for metadata searches and having a filled collection. at a minimum the studio and director.
country can always fall back to be japan if it has no input, since its all anime anyway.

[Cazzar]

I don't want to do anything that requires requests outside of shoko, barring the title music.
Best to have this as an API update in Shoko... perhaps part of apiv3 and extra metadata providers?