title: how to use multi Item Type in JetPack-Paging3?
body: <p>I want to use Multi Type in Paging3,but <strong>PagingDataAdapter</strong> only suport one generic paradigm. How to do it?Maybe there is some demo?</p>
  <p>And I want to use it with Room.</p>
  <p>Like in a RecylerView , there are two kinds of item.One is text content,another is image.</p>
  <p>So I want to know how to do it?</p>