Support refreshable materialized views

[BentsiLeviav]

Summary

Closes #252

This PR enhances the current mv implementation by introducing the ability to create refreshable materialized views.
Important Note: Currently, there is no direct "dbt linkage" between materialized views and their dependencies. As a result, the order of creation for dependencies is not guaranteed.

A potential solution to address this limitation is to pass a dbt ref object to the dependency list. However, this would require implementing MessagePack serialization to handle the references appropriately.

[BentsiLeviav]

This is a config example of the current implementation:

{{
    config(
        materialized='materialized_view',
        refreshable={
        "interval": "EVERY 2 MINUTE",
        "append": true,
        "depends_on": ['default.depend_on_model_mv']
        }        )
}}