title: Run single folder of pytest tests in vscode
body: <p>I have a sort of a "micro-service" Python repo with a setup similar to the following: </p>
  
  <pre><code>sample
  ├── bar
  │   ├── src
  │   │   └── main.py
  │   └── tests
  │       └── test_main.py
  ├── foo
  │   ├── src
  │   │   └── main.py
  │   └── tests
  │       └── test_main.py
  └── shared
      ├── src
      │   └── main.py
      └── tests
          └── test_main.py
  </code></pre>
  
  <p>In vscode I only have the option of running <em>all</em> tests in <code>foo</code>,<code>bar</code>,<code>shared</code> or running individual test <em>methods</em> in the subfolders. What I want to do is be able to quickly run just the <code>foo/tests/</code>. </p>
  
  <p>Is there some way I can configure pytest/Python to do this? I don't want to split each top level folder into its own workspace because I regularly jump back and for between them and don't want to have multiple windows per workspace open.</p>