Add timestamp with timezone alias

[kalistratovtimofey]

• [X] Do only one thing
• [X] Non breaking API changes
• [X] Tested

What did this pull request do?

Adds proper work for "time stamp with time zone" type

User Case Description

I've faced extra "ALTER TABLE..." requests on every app start with Gorm auto-migrate. Investigated that Gorm can't recognize timestamp with timezone type because it comes as 'timestamptz' from postgres