changes to add flag to control common masking policy

How to configure database and schema for the masking policy ?

By default this process creates the masking policies in same directory as the database objects. You can change this default behavior by using following parameters in your dbt_project.yml

• use_common_masking_policy_db (optional): Flag to enable the usage of a common db/schema for all masking policies. Valid values are “True” OR "False"
• common_masking_policy_db (optional): The database name for creating masking policies
• common_masking_policy_schema (optional): The schema name for creating masking policies

Test result with config enabled

vars:
  use_common_masking_policy_db: "True"
  common_masking_policy_db: "DEMO_DB"
  common_masking_policy_schema: "GDPR"

Test result without config in project

Data in snowflake