Support has_database_privilege function

Add support for the has_database_privilege function.

Author: mjgarton

datafusion-postgres/src/pg_catalog.rs

@@ -1185,6 +1185,9 @@ pub fn setup_pg_catalog(
     ));
     session_context.register_udf(has_privilege_udf::create_has_privilege_udf(
         "has_schema_privilege",
+    ));
+        session_context.register_udf(has_privilege_udf::create_has_privilege_udf(
+        "has_database_privilege",
     ));
     session_context.register_udf(has_privilege_udf::create_has_privilege_udf(
         "has_any_column_privilege",