Introduce a `cvat-sdk auto-annotate` command that downloads data for a task,
then runs a function on the local computer on that data, and uploads
resulting annotations back to the task.
To support this functionality, add a new SDK module,
`cvat_sdk.auto_annotation`, that contains an interface that the
functions must follow, and a driver that applies a function to a task.
This will let users easily annotate their tasks with custom DL models.
Boris Sekachev