added an option to use event spin instead of spin1z=spin2z=0
fixed #93 (closed)
Usually, for 2d runs in mass parameters spin is set to spin1z=spin2z=0
in the ILE jobs. This update adds a new option to use the gracedb event spin instead.
related MR https://git.ligo.org/rapidpe-rift/rapidpe/-/merge_requests/40
Edited by VINAYA VALSAN