title: Create user with Auth and write to Firestore at the same time
body: <p>I have a scenario where I need to create a user using the <code>Auth</code> and add more info (such as name and type of business) to Firestore database. Firestore as transaction/batch operation but it is for Firestore only.</p>
  
  <p>Is there a way where I can perform <code>Auth</code> operation such as create along with the Firestore data insert. Both operation has to succeed or fail. Right now I chain them but I would be worried that one fails and the other success in which a will need to handle gracefully.</p>
  
  <p>Thank you</p>