Add download bandwidth limit option to kaggle datasets download

Feature request: Add bandwidth limiting for downloads

Problem

The Kaggle CLI can download very large datasets, but there is currently no way to limit download speed.

For example:

kaggle datasets download -d username/dataset

Proposed solution

Add an option similar to tools like aria2/curl:

kaggle datasets download \
  -d owner/dataset \
  --max-download-rate 350K