title: How do you generate services etc. for a @nrwl/nx angular-cli app?
body: <p>Normally when using @angular/cli to develop an application, you add a new service in the following manner:</p>
  
  <p><code>ng generate service foo
  </code></p>
  
  <p>This would generate "FooService".</p>
  
  <p>My question is, when you have generated a library using @nrwl/nx, how do you add a service to it?</p>
  
  <p><code>ng generate lib foo-lib
  </code></p>
  
  <p>What I want to know, is the command to generate service "foo", so that it lives in the foo-lib library.</p>