[Feature] Add a Download All button

[BenShelton]

Packages

Media

Describe the solution you'd like

On the Control Panel when viewing a publication you have to download each video individually. Instead we could add a Download button.

• Only shows if there are 1+ videos not downloaded
• Will download all items
  • Sends a request through IPC
  • Sets the downloading state of each tile
  • Sets all videos to downloaded when complete

Describe alternatives you've considered

We can still download them individually, it's just slow

Additional context

N/A