removed vs files and updated vscode files.

[stephenhensley]

There are about 7 extra files per example when including the support in every example, and we encourage the use of VS code

The helper.py script has been updated to be able to add the Visual Studio+VisualGDB files to a project using a cli switch. So the files can be recovered when desired by running:

./helper.py update --include_vgdb ./path/to/project

This should reduce a little of the repo size, but also will help incoming PRs easier to manage and review.