title: Way to resolve both string and list as a Java list in Typesafe config
body: <p>I have a HOCON config file, something like</p>
  <pre><code>    foo {
            [
             id: 1
             f: abc
            ],
            [
             id: 2
             f: [xyz , pqr]
            ]
          }
  </code></pre>
  <p>At the backend, I want the field f as a Java list. So wherever the field f is a string, I should be able to convert it to a List. config.resolve() doesn't seem to work here and I need a custom wrapper on top it which I'm unable to think of. Is there any way by which this could be achieved ?</p>