Not a blend file per se but an addon to help you setup precisely the position of eevee light probes. Demo and tutorial at https://www.youtube.com/watch?v=swkkocpE5ho
NB: The tutorial did not explain this: Bounding box created with the add-on can be handy:
create a bounding box (with the addon) previous to the intended irradiance/reflection probes
create the probes based on the bounding box (with the addon)
keep the bounding for future small ajustments (in some hidden collection)
eventually adjust the bounding box and delete + recreate the probes relatively to the new coordinates of the bounding box (with the addon)
Dont hesitate to ask questions or tell me (because of the little success for the time being of downloads of the addon) if I missed a possibility of blender that allows to create the kind of illumination you can see on the demo, because I wonder much how people can set up such an EEVEE lighting without some kind of add-on.
Well that's one hell of a time saver (+ reduces frustration), thank you very much for that. I wish it was in the regular Blender. Maybe you could try to provide it to Blender Foundation ? That would make this feature a lot more known.