Merge pull request github#3723 from JLLeitschuh/fix/JLL/gitignore_vs_code_generated_files

Add .gitignore for VS Code Generated maven project files

Author: aschackmull

java/ql/test/query-tests/maven-dependencies/.gitignore

@@ -0,0 +1,6 @@
+# These files are automatically generated by VS Code and should not be checked in
+*/.classpath
+*/.project
+*/target/*
+*/.settings/
+.project