title: Firebase crashlytics upload dsym automatically
body: <p>I'm using React Native Firebase. At firebase crashlytics I have missing DSYM's.
  <a href="https://i.stack.imgur.com/FeCYd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FeCYd.png" alt="enter image description here"></a></p>
  
  <p>What's the right way to add dSYMs automatically on every build? I guess it should be added to run script? If so, how can I get the path to <code>/path/to/pods/directory/FirebaseCrashlytics/upload-symbols</code> and <code>/path/to/dSYMs</code>.</p>
  
  <p>Thanks!</p>