title: How to add more cases for enum in swift
body: <p>I am trying to achieve the following in Swift.
  Adding more cases to enum rather than editing on the existing one.</p>
  
  <p>For example, I have the following enum and I want to add more cases using extension, not to edit on the original enum. </p>
  
  <pre><code>enum UIType: String, Codable {
      case borderButton = "border_button"
      case bottomSheet = "bottom_sheet"
  }
  </code></pre>
  
  <p>Now if I want to add more elements to enum</p>
  
  <pre><code>case borderLabel = "border_Label"
  </code></pre>