Functionality for export all frames at the same time

[Ricky-WangProf]

Hi there,

One of the function you guys can add is export all frames button in visualization tool. Currently you can only export the frame one by one and with the option you select (ground truth, results and evaluation). There should be another button "export all frames in current sequence", which will be more convenient for researchers to use. And it will save some time to write the script to export frames by ourselves.

Thanks!