chore: import upstream snapshot with attribution

docker/postgresql/postgres-script.sql

@@ -0,0 +1,8 @@
+CREATE DATABASE openmetadata_db;
+CREATE DATABASE airflow_db;
+CREATE USER openmetadata_user WITH PASSWORD 'openmetadata_password';
+CREATE USER airflow_user WITH PASSWORD 'airflow_pass';
+ALTER DATABASE openmetadata_db OWNER TO openmetadata_user;
+ALTER DATABASE airflow_db OWNER TO airflow_user;
+ALTER USER airflow_user SET search_path = public;
+commit;