A sibling comment mentioned Sway, and I've also used this on both Fluxbox and i3. I would be surprised if Awesome didn't have it as well.

The only problem is that (at least in Fluxbox's case) it suffers from poor discoverability, since it's a modifier to the window drag action that has no corresponding buttons or "landing zones" like what you get if you try to tear tabs out of a Firefox window.

This is actually a feature I wish the KDE guys would bring back.

Bug report:

https://bugs.kde.org/show_bug.cgi?id=343690

i3 and any similar window manager have this feature.