Project: datamanagement
Issue DM-5886: Provide ngmix-based MCMC galaxy fitting
DM-2250 provided for "simple" fitting of galaxies in single frame measurement using ngmix. Extend this to fit galaxies using ngmix's MCMC sampling facilities. This may include defining a mechanism to store MCMC samples in source records. This should be available through (an) lsst_apps (or _distrib) based meas_extension package(s).
Story points: 60