VariableBlurView() by itself?

[Saim-Khan1]

Hey @daprice! Love this repo, been waiting for a Metal based progressive blur for a while now so thanks a lot for putting this together! Was just wondering whether it'd be possible to have a VariableBlurView() as a view itself, so it can be, for example, put on top of content in a ZStack or as an overlay instead of being applied to a view as a modifier? A bit like UIKit's UIVisualEffectView I suppose. That'd be awesome, thanks a lot :)