title: Monaco editor - linting errors customization with warning/error icons
body: <p>I've been previously using CodeMirror editor in my project, but recently I have decided to switch to Monaco editor.</p>
  
  <p>Now I am trying to provide my users with all the functionalities they had previously (+ additional ones provided by Monaco), and therefore I would like to provide them with similar way of showing linting warnings/errors.</p>
  
  <p><a href="https://i.stack.imgur.com/uFYGq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/uFYGq.png" alt="enter image description here"></a>
  Is there some way to achieve CodeMirror like way of showing errors, with use of icons in Monaco editor?</p>