Type Annotations for s3transfer

types-s3transfer provides static type annotations and code completion for the `s3transfer` package, an Amazon S3 Transfer Manager. It significantly enhances IDE support and enables robust static type checking for Python applications that utilize `s3transfer` for efficient file transfers to and from AWS S3. Part of the `mypy_boto3_builder` project, this package is actively maintained, with its version (0.16.0) intended to align with the `s3transfer` version it types.