Add end-to-end test for make pgxntool-sync#6

jnasbyupgrade merged 1 commit intoPostgres-Extensions:masterPostgres-Extensions/pgxntool-test:masterfrom

jnasbyupgrade:pgxntool-sync-testjnasbyupgrade/pgxntool-test:pgxntool-sync-testCopy head branch name to clipboard