Feature/howard for nu mi2023 a from gputnam configs plus few extras

[brucehoward-physics]

Picking up a few more things Gray pointed out beyond what's in #694 . This should go in after that, as this picks up those commits and adds this.

[SFBayLaser]

I will leave my standard lament that variations require separate fhicl files which only serve to make things more challenging to understand. Sigh... well, that shipped sailed many years ago I suppose.

[mrmooney]

All fine to me

[miquelnebot]

trigger build

[FNALbuild]

✔️ CI build for LArSoft Succeeded on slf7 for e26:prof -- details available through the CI dashboard

[FNALbuild]

✔️ CI build for LArSoft Succeeded on slf7 for c14:prof -- details available through the CI dashboard

[FNALbuild]

❌ CI build for ICARUS Failed at phase build ICARUS on slf7 for e26:prof -- details available through the CI dashboard

🚨 For more details about the failed phase, check the build ICARUS phase logs

parent CI build details are available through the CI dashboard

[FNALbuild]

❌ CI build for ICARUS Failed at phase build ICARUS on slf7 for c14:prof -- details available through the CI dashboard

🚨 For more details about the failed phase, check the build ICARUS phase logs

parent CI build details are available through the CI dashboard

[FNALbuild]

✔️ CI build for LArSoft Succeeded on slf7 for e20:prof -- details available through the CI dashboard

[FNALbuild]

⚠️ CI build for ICARUS Warning at phase ci_tests ICARUS on slf7 for e20:prof - ignored failure for unit_test -- details available through the CI dashboard

🚨 For more details about the warning phase, check the ci_tests ICARUS phase logs

parent CI build details are available through the CI dashboard