move instdataIO code from pfs_instdata to ics_utils

(rubin3_ics) pfs@tron:~$ oneCmd.py rough1 version
Traceback (most recent call last):
  File "/software/mhs/products/Linux64/tron_actorcore/2.4.6/bin/oneCmd.py", line 10, in <module>
    import actorcore.Actor
  File "/software/mhs/products/Linux64/tron_actorcore/2.4.6/python/actorcore/Actor.py", line 35, in <module>
    import ics.utils.instdata as instdata
  File "/software/mhs/products/Linux64/ics_utils/1.4.0/python/ics/utils/instdata.py", line 3, in <module>
    import pfs.instdata.io as instdataIO
ModuleNotFoundError: No module named 'pfs'