Project: Add .code-workspace wildcard to gitignore

[JKLeckr]

What is this?

This replaces .code-workspace with *.code-workspace in the root .gitignore

Why is this needed?

VSCode, these days, by default, names the workspace file foldername.code-workspace. This change will make life a little easier by no longer requiring vscode users explicitly save the workspace as .code-workspace

How will this affect the project?

This will enhance developer experience. It is unlikely that adding a wildcard to .code-workspace would negatively affect or break the project. It was verified that there wasn't any other files that contained ".code-workspace" in the github project.