add .gitignore test

tests/syntax-tests/source/Git Ignore/test.gitignore

@@ -0,0 +1,43 @@
+*~
+.#*
+.DS_Store
+.cproject
+.hg/
+.hgignore
+.idea
+*.iml
+__pycache__/
+*.py[cod]
+*$py.class
+.project
+.settings/
+.valgrindrc
+.vscode
+.favorites.json
+/Makefile
+/build/
+/config.toml
+/dist/
+/dl/
+/doc/
+/inst/
+/llvm/
+/mingw-build/
+# Created by default with `src/ci/docker/run.sh`:
+/obj/
+/unicode-downloads
+/target
+# Generated by compiletest for incremental:
+/tmp/
+tags
+tags.*
+TAGS
+TAGS.*
+\#*
+\#*\#
+config.mk
+config.stamp
+Session.vim
+.cargo
+!/src/test/run-make/thumb-none-qemu/example/.cargo
+no_llvm_build