Add build artefacts generated during "make"/"make check" to .gitignore

.gitignore

@@ -20,10 +20,22 @@ __pycache__
 lightningd/test/run-channel
 lightningd/test/run-cryptomsg
 lightningd/test/run-commit_tx
+lightningd/test/run-find_my_path
 lightningd/test/run-funding_tx
 lightningd/test/run-key_derive
 wire/test/run-peer-wire
 bitcoin/test/run-tx-encode
+channeld/test/run-full_channel
+common/test/run-bolt11
+common/test/run-json
+common/test/run-sphinx
 daemon/test/run-maxfee
+external/libbacktrace-build/
+external/libbacktrace.a
+external/libbacktrace.la
+gossipd/test/run-find_route-specific
+gossipd/test/run-initiator-success
+gossipd/test/run-responder-success
 test/test_protocol
 test/test_sphinx
+tests/.pytest.restart