download status table could show sizes

[tdhock]

using #242 we get a new common chunk tsv that reduces overall tsv file disk usage by 50%

hoct2726@DINF-THOCK-01A MINGW64 ~/projects/hicream-viz/data-2025-10-02 (main)
$ du -mc ~/viz/2025-10-02-HiC-pixels-zoom-diamonds/*tsv|grep total
141	total
(base) �]0;MINGW64:/c/Users/hoct2726/projects/hicream-viz/data-2025-10-02�
hoct2726@DINF-THOCK-01A MINGW64 ~/projects/hicream-viz/data-2025-10-02 (main)
$ du -mc figure-pixels-zoom-common/*tsv|grep total
71	total

download status table shows that there are 300 tsv files to download

it would be good to add disk usage related info for each geom. (total/mean in megabytes and rows)

[ANAMASGARD]

#272

Sir I HAVE raised a PR please review the test and can you please tell me what changes i should make in it .