Add PostgreSQL array datatype

[jacquesalice]

I would like the option to store a column as an array datatype, specifically with PostgreSQL. I would think it could be defined in the postgresql:datatype: property. For example, defining a column with the DOUBLE PRECISION[] psql datatype in the felis yaml file would look like:

  - '@id': '#euclid_q1_phz_photo_z_felis.phz_photo_z.ie_cuts_weights'
    datatype: double
    description: Vector of probability to be a usable source for different cuts
    name: ie_cuts_weights
    nullable: true
    postgresql:datatype: DOUBLE PRECISION[]
    tap:principal: 0
    tap:std: 0

Is this something that could be added to felis?

[JeremyMcCormick]

We are quite busy on Rubin right now with commissioning, but I will make sure this is reflected in our Jira. This is a capability that we have discussed but not implemented.