Adjust flow.cylc to use catalog builder flexible config option

[aradhakrishnanGFDL]

When we started off, we didn't have a --config option in catalog builder. This issue tracks the updates to flow.cylc to ensure catalog builder is called with a --config option. Note that one can use --config and pass input/output if that's convenient.

./gen_intake_gfdl.py /archive/John.Krasting/fre/FMS2024.02_OM5_20240724/CM4.5v01_om5b06_piC_noBLING/gfdl.ncrc5-intel23-prod-openmp/pp/ /home/a1r/tmp/testcat1123 --config /home/a1r/git/forkCatalogBuilder-/catalogbuilder/tests/config-cfname.yaml

See NOAA-GFDL/CatalogBuilder#59 for more info.
Docs in catalog builder are yet to be updated