chore: import upstream snapshot with attribution

testing/bats/dataloading/tab-load-with-no-tx-control.sql

@@ -0,0 +1,11 @@
+CREATE TABLE test (pk int primary key);
+INSERT INTO test VALUES (0), (1);
+
+CREATE TABLE test_info (id int, info varchar(255), test_pk int, primary key(id), foreign key (test_pk) references test(pk));
+
+COPY test_info FROM STDIN WITH (HEADER);
+id	info	test_pk
+4	string for 4	1
+5	string for 5	0
+6	string for 6	0
+\.