.gitignore: add new test binaries
/test/across-fork
/test/b19062a56726-test
/test/b5837bd5311d-test
+/test/ce593a6c480a-test
/test/connect
+/test/close-opath
/test/cq-full
/test/cq-overflow
/test/cq-peek-batch
/test/cq-ready
/test/cq-size
+/test/d4ae271dfaae-test
/test/d77a67ed5f27-test
/test/defer
/test/eeed8b54e0df-test
/test/socket-rw
/test/splice
/test/sq-full
+/test/sq-full-cpp
/test/sq-poll-kthread
/test/sq-space_left
/test/statx
