docs: Could we please get a table for PostgreSQL versions by release similar to the Java one?

*Please describe the question or issue you're facing with "Toolchain availability - Ubuntu for Developers".*

I'd like to be able to see what versions of PostgreSQL are/were default/supported/current for each Ubuntu release similar to the excellent Java reference page available at https://documentation.ubuntu.com/ubuntu-for-developers/reference/availability/java/

Bonus points for availability and versions of PostGIS, Apache AGE, pg_vector, and pgAdmin in there somehow too.

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*Reported from: https://documentation.ubuntu.com/ubuntu-for-developers/reference/availability/*

Start with the Ubuntu for Developers availability index and the Java reference page at https://documentation.ubuntu.com/ubuntu-for-developers/reference/availability/java/. Research default, supported, and current PostgreSQL versions for each Ubuntu release, then document them in a comparable table. Done means the PostgreSQL reference is complete and the optional PostGIS, Apache AGE, pg_vector, and pgAdmin coverage is clearly addressed.

Written by the indexing model from the issue text.