Add Multiselect to Events Window

[tkffaul]

I don't know if this is the right place... but id like to suggest adding a multi select to the event window in frigate. I had my camera pick up some snow the other night when i wasn't home and load me up for hours with a detection every 2 minutes. I'd like to just pick those events out and wipe them quickly.

[NickM-27]

There's a pinned issue for this #2063