title: Use Angular applications in another Angular project
body: <p>I have two Angular applications. Each have one main Module and some components.
  I want to have a third Angular project, that uses them.
  How can I do that?</p>
  
  <p>I think I should somehow package each application and then install it in the new Angular project, but I think it's possible to package only Library projects, not Application projects.</p>
  
  <p>I know about Angular Elements, but I think packaging each project files will end up with conflicts, because they create some common files like polyfills.js and runtime.js.</p>