Project: datamanagement
Issue DM-4840: Add sky objects
Please add "sources" corresponding to empty sky (ie, at positions where nothing else has been detected) and include them in multiband processing. This is a port of [HSC-1336|https://hsc-jira.astro.princeton.edu/jira/browse/HSC-1336] and [HSC-1358|https://hsc-jira.astro.princeton.edu/jira/browse/HSC-1358].
Story points: 4