Select all checkboxes with one button in View Uploads

[evez0]

Feature request

Let us stop the eternal checkbox selecting mini-game once and for all with a button to select them all.

Problem this would solve:
Adding a delete all selected button was a great quality of life improvement, although we currently still have to manually select all checkboxes for items we would like to delete.

Ideas on how to solve it:
Adding a function to lewd2/Public/JS/viewUploads.js to catch all items in the generated list and trigger it in lewd2/views/partials/view-uploads.hbs by a button click.

Please see the design mockup attached to this issue.