No option to pass required fields when getting file metadata

[Jamzy01]

When trying to get metadata, I can't pass fields to the request, so the api doesn't return the data and everything in the File struct that is returned is just default values. I've tried this on the google api explorer, and it works just fine. I'd be completely happy to write this and make a pull request for it, but I can't tell whether this repository is dead or not, in which case there isn't much point in bothering.

[PierrickGT]

I've forked the repository and started to implement the required fields: https://github.com/PierrickGT/third-party-api-clients/blob/e1a7313abc9b308833b4a48449ce46ee91e70a47/google/drive/src/about.rs#L19