Hi
The plugin BuliCommander have a functionality to generate automatic layouts with given files:
But current released version (0.6.0a) is still in early testing phase, not compatible with Krita 5, and buggy for Windows users 
Next release (0.7.0b) currently under development fix all of these problem, but is not released yet (but possible to use as all fixed things are already available on github repository)
Grum999