Ignore test binaries with catch-all pattern

Replace individual test binary entries with test/test_* pattern,
negating source files (!test/test_*.cpp/hpp/h). Prevents future
build artifacts from appearing as untracked.

Author: frstrtr

.gitignore

@@ -143,9 +143,10 @@ deactivate_conanbuild.sh
 deactivate_conanrun.sh
 CMakePresets.json
 src/c2pool/c2pool
-test/test_address_resolution
-test/test_compute_share_target
-test/test_hardening
-test/test_stratum_extensions
-test/test_utxo
-test/test_utxo[1]_include.cmake
+
+# Test binaries and cmake artifacts (built by cmake --build)
+test/test_*
+test/test_*_include.cmake
+!test/test_*.cpp
+!test/test_*.hpp
+!test/test_*.h