Deprecate drupal_attach_tabledrag(). Move its logic in Table form element

Came across this issue from #3015538: [META] Deprecate contents of common.inc → and looks like it needed a rebase on 10.1.x. However, rather than opening another MR, I thought a patch would be quicker and easier.

Looks like tabledrag.js was renamed and had a bit of work done to it, so I've just kept it as is. Not sure whether this is correct or not.

The last submitted patch, 72: 3035343-tabledrag-72.patch, failed testing. View results →