It should be implemented on os-system level, so you can access the content, no matter with which app.
For Firefox, I've found an extension that moves tabs to a new window. It mostly works, but there are rough edges. I apparently have enough resources for all my browser windows in my shaggy laptop for it to never swap. The overhead doesn't seem huge enough to warrant the removal of the possibility of disabling tabs.
It doesn't work well enough. It's mostly terrible, for example window size and position not being remembered, and opening in random places and sizes.