UI progress bar for upload progress

[virajsh4h]

When a huge file (say >1GB) is broken down and chunked into multiple small 20MB files and uploaded, there is no UI indicator of upload progress. Would like to add that.

[bigoninja]

Can you able to upload multiple files at the same time? It seems like it doesnt have that option?

[virajsh4h]

I've added the ui bar in a pr, might check for multiple files - you're right: only 1 file at a time can be uploaded so maybe need to use some sort of smart queue.