[Feat]: Postgresql: display table partitions as nested under the parent

[finsterdexter]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the feature has not already been requested

🚀 Feature Proposal

Right now, postgres table partitions are showing up as fully separate tables. I think the convention is for the child tables relispartition = true, relkind = 'r' to be hidden or shown as nested under the parent table relking = 'p'.

Motivation

Cleaner presentation for schemas that have MANY table partitions.

Example

When viewing a schema, the parent table would be shown and then the partitions would show as nested elements under that, with some kind of expando control to expand/collapse the list of partitions.