Add an option to download only files with minimum translation percentage

[erickskrauch]

Is your feature request related to a problem? Please describe. There is no way to download files, that translated for at least some percentage.

Describe the solution you'd like I need some option for the download command, that will pull only files with some translation/approve percentage.

For example:

crowdin pull --min-translated=80 --min-approved=20

Describe alternatives you've considered As an alternative, I can only see a self-implementation of the downloading process through the API.