Add database helpers 'add_timestamps_with_timezone' and 'timestamps_with_timezone'

What does this MR do?

This MR adds:

1. A database helper add_timestamps_with_timezone based on Rails' add_timestamps method.
2. A database helper timestamps_with_timezone based on Rails' timestamps method.
3. A custom datetime_with_timezone data type:

• for PostgreSQL it converts to timestamptz.
• for MySQL it converts to timestamp.

Why was this MR needed?

We want to store data with timezone information.

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Tests
  • Added for this feature/bug
  • All builds are passing
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #32054 (closed)