title: Add left/right horizontal padding to UILabel
body: <p>I need to create a <code>UILabel</code> with a background color, and I'd like to add some left/right leading/trailing horizontal padding.</p>
  <p>But every solution I've found seems like a nasty hack.</p>
  <p>What is the 'standard' way to achieve this from iOS 5 forward?</p>
  <p>A screenshot to illustrate my scenario:</p>
  <p><img src="https://i.stack.imgur.com/m5Li2.png" alt="left padding needed " /></p>