title: Run All JUnit Tests VSCode
body: <p>I've been able to add JUnit 5 to VSCode and run tests on single files, but I'd like to be able to use the 'Run all tests' button in the test explorer pane so that I can get all tests to run at once. However, i'm encountering a problem where when I press this button and I get the following error in output:</p>
  <pre><code>Error: Failed to parse the JUnit launch arguments
  </code></pre>
  <p>I think I need to add some kind of launch configuration to pass in arguments to JUnit, but I've not been able to find anything about how to do this. Does anyone have any insight into getting this to work?</p>