title: Execute a bat file on keypress in VsCode
body: <p>I'm writing shaders for vulkan, which have to be compiled into spir-v. I have a very nice batch file that will go through and build my shaders for me using the GLSlangvalidator. I'm trying to get a keypress to run my batch file in VsCode so I can check my code for errors and so that it is built. I have the following: </p>
  
  <pre><code>    {
      "key": "f5",
      "label": "build",
      "type": "shell",
      "command": "workbench.action.terminal.sendSequence",
      "args" : {"text": ".\\compile.bat"},
      "presentation" : {
          "reveal": "always"
      }
  </code></pre>
  
  <p>This nearly works - but I still have to focus on the inbuilt terminal panel and hit enter. Surely there is a way to execute a command, rather than to just input the string? 
  Thanks!</p>