Support download progress bar

[shenxianpeng]

originally posted by 2bndy5 in #3

However, those assets are around 500 MB each, and that might slow down this pkg's executable script (I wish there was a simple way to show a download progress bar).

I recently used the python std lib curses (a c-extension wrapper lib), but that's only natively available on linux. We'd have to either draw the bar manually or use rich (which is a bit bloated for our scenario). This stack overflow answer just shows a textual percentage...

[shenxianpeng]

The stack overflow answer looks enough for us