Consider adding pg_partman extension

[Jean-Daniel]

As Couldnative PG supports declarative Tablespace (since 1.22), it would be extremely useful to get pg_partman available in the PostgreSQL image.

To quote Cloudnative PG documentation:

In the context of the database industry, tablespaces play a strategic role, particularly when paired with table partitioning, a logical database modeling technique.

While it is perfectly possible to use table partitioning without pg_partman, it is widely used to managed table partitions.

pg_partman is readily available in the Debian repository, so it can easily be included in the built images.