Ndx fiber photometry (#53)

Co-authored-by: !git for-each-ref --format='%(refname:short)' `git symbolic-ref HEAD` <ben.dichter@gmail.com>
Co-authored-by: Ryan Ly <rly@lbl.gov>
Co-authored-by: Luiz Tauffer <luiz_tauffer@hotmail.com>
Co-authored-by: Alessandra Trapani <55453048+alessandratrapani@users.noreply.github.com>

Author: 5 people