Detect indexes duplicate of primary key

Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.

• Label this issue

This is an extension of POC : Automatically detecting duplicate databas... (#385701 - closed).

Currently, we're not detecting duplicate indexes of the primary key. For instance:

    "user_details_pkey" PRIMARY KEY, btree (user_id)
    "index_user_details_on_user_id" UNIQUE, btree (user_id)