✨ Add PostgreSQL support

[wiecek1873]

Feature Request: Add PostgreSQL support

Is your feature request related to a problem? Please describe.
No, this is not related to any existing problem.

Describe the solution you'd like
I would like the option to choose PostgreSQL as the database provider when creating a new project using this clean architecture template. This will provide greater flexibility and satsify developers who prefer or require PostgreSQL for their projects.

Describe alternatives you've considered
Currently, SQL Server is the default database provider in this template. While it works well, having support for PostgreSQL would be beneficial for those who either have a preference for it or need its specific features.

An alternative could be manually integrating PostgreSQL after project creation, but this can be time-consuming and error-prone compared to having built-in support from the start.