In for one!

Try the Simple Tab Groups addon for Firefox. I’ve been using it for years and prefer it to any other tab grouping now.

You may be thinking of motioneye - https://github.com/motioneye-project/motioneye, which integrates with HASS fairly well if I remember.

OP, I’m headed down the same hole and here’s some high level info I’ve picked up so far.

You can certainly stream your camera to HASS, but unless you’re running it on a system fast enough to process the streams, and with enough space to store the data, you’re not going to have a good experience.

You’re better off streaming them to a NAS or to a dedicated NVR. There are plenty of options for packages which include wireless and POE cameras. Once you have this in place you can display the streams in cards or whatever you want in HASS.