Trash bin - add filters, improve batch actions

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Is your feature request related to a problem? Please describe.
I've now had 2 cases were the desktop client I used (used owncloud client because I needed the Virtual File System functionality) sent delete command for almost all of my files. Frankly, recovering those files from the Trash bin is a huge pain in the ass because atm you can only recover all files (even that keeps crashing) or you have to select single files, if you need to do it in thousands of files it's frankly pain in the ass.

Describe the solution you'd like
First thing I'm proposing, add filters, that would include minimally:

• Choose datetime period, when the files were deleted
• Allow searching by folder. For example yesterday, I know it only managed to delete important stuff in my /Notes folder, would have been nice if I could limit the trash bin to show only deleted content from /Notes frolder.
• Improve batch working:
  • selecting multiple (there is select range option when I click 2 items, but nothing happens) files more easily
  • when I select multiple files and click restore, instead of sending restore backend call for each file separately, send it as one backend call, that includes list of files. This would prevent browser from crashing/dying if I need to restore for example thousands or tens of thousands files.

Describe alternatives you've considered
I tried varius other webdav clients, including windows 10 file explorer integration to directly access /remote.php/dav/trashbin/Admin to see if any of them can handle moving files from trash folder to restore folder. None of them could. About half of them could see the files in trash, but not open nor move them.

Start by locating the trash-bin UI and the /remote.php/dav/trashbin/Admin entry point mentioned in the issue, then trace how selection, filtering, and restore requests currently work. Done means users can filter deleted files by date and folder, select batches reliably, and restore large selections without one backend call per file.