IMO there is no need for that, all you need to know is that you should use proper value in lumens for the artificial lights (there is plenty of data online about this), the sun/sky is already calibrated by default and you can use that as a reference for calibrating HDR.
Once your lights are calibrated you will need to tune the exposure of your camera and this is really a simple process, start a render, adjust the exposure inside the VFB until it looks correct, then transfer the exposure on your camera setup, done.
Most render engine are actually quite precise about lights physical values so you just need to stitch to real world data and you will be fine ;)