Support resumable download

[rosbo]

• Supports full model & single file downloads
• Updated client to send HTTP "Range" header on resume.
• Use a fixed path for the archive to allow resuming.
• Setup logging infra (and use it to print the resuming state). Example:

$ kagglehub.model_download('keras-nlp/albert/keras/albert_extra_extra_large_en_uncased/1')
3%|███                | 25.0M/789M [00:00<00:13, [00:00<00:13, 59.6MB/s]

# CTRL+D to kill the process

$ kagglehub.model_download('keras-nlp/albert/keras/albert_extra_extra_large_en_uncased/1')
Resuming download from 29360128 bytes (798274426 bytes left)...
100%|█████████████████| 789M/789M [00:09<00:00, 84.7MB/s]

http://b/307572374