title: How to detect if VS Code is installed on a given Windows machine
body: <p>I'm building a WIX Toolset based installer for a product that includes a VS Code extension as one of its components. How can I reliably detect if VS Code is installed on a given Windows machine to do a proper prerequisite check?</p>
  
  <p>Is there some registry key/value that has a high chance of staying fairly stable over the future VS Code releases? 
  For example: HKLM\SOFTWARE\Classes\Applications\Code.exe\shell\open\command</p>