Add a progress bar when loading model from pretrained
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I'm attempting to download a pre-trained model from the NGC source. Unfortunately, my network connection is not performing optimally. The absence of a download progress bar makes it difficult for me to estimate the remaining time for completion, resulting in frustration and uncertainty during the download.

I suggest incorporating a progress bar into the pre-training model download process. This feature should display both the download progress and speed, providing users with real-time feedback and enhancing the overall downloading experience.