Better Error Message for BBH Headon ID

[AlexCarpenter46]

Bug reports:

Expected behavior:

If I specify

spectre bbh generate-id -q 1.0 --chi-A 0 0 0 --chi-B 0 0 0 -e 0 -w 0 -o ID -N 1

I would expect an error like "Cannot use omega = 0 with e = 0"

Current behavior:

Instead this is what it currently prints which is not very helpful
"Failed to find a separation that gives the desired orbital angular velocity. Error: Maximum number of function evaluations has been exceeded."

[nilsdeppe]

Oh, we probably need to not try to use PN to get a guess in this case... Basically, if Omega=0 then I think the PN guess can't work because PN assumes orbits