title: Move .tsconfig and .tslint file to different directory
body: <p>Inside my Angular CLI project I want to move all my config files into a new folder which I've named 'angular'. The code compiles and all npm scripts run, but I'm not getting any linting or typescript errors inside my <code>app</code> folder. Here is the folder structure I am attempting:</p>
  
  <pre><code> project
      │   tslint.config.json
      │   tslint.json    
      │
      └───src
           │   
           └───angular
           │   tsconfig.app.json
           │   tslint.json
           │     
           └───app
                │   app.module.ts
                │   app.component.ts
  </code></pre>
  
  <p>All references inside of my angular.json file have been updated and there are no errors, but the only place the linter works is INSIDE of the 'angular' folder! How can I change this to point to my 'app' folder?
  The reason I want to do this customization is to keep the files I hardly ever use out of view like this:</p>
  
  <p><a href="https://i.stack.imgur.com/3fkH6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3fkH6.png" alt="enter image description here"></a></p>