title: Adding source root to Python project structure VS Code
body: <p>It seems that this issue has been a common one for quite some time, but after scouring stackoverflow, reddit, and vscode docs, I am desperate to find an answer. I thought I'd give it another shot here. In PyCharm, you can go to 'Project Structure' and add source root folders to resolve relative import and pylint issues, as described here: 
  <a href="https://www.jetbrains.com/help/pycharm/configuring-project-structure.html" rel="nofollow noreferrer">https://www.jetbrains.com/help/pycharm/configuring-project-structure.html</a>.</p>
  
  <p>Is there a way to implement this feature in VSCode?</p>