Feature Request : Integrate firebase analytics

[Ni3verma]

Is your feature request related to a problem? Please describe.
Currently there is no way to know what users are liking in app, what they are not, what they use most and what least, etc

Describe the solution you'd like
Integrate analytics to better understand user behavior and analyze key events so as to make app better and more user oriented.

Additional context
only important events should be added and in no way, user data should be transferred to firebase
https://developers.google.com/analytics/devguides/collection/firebase/android
https://stackoverflow.com/questions/45201346/how-to-track-android-fragments-using-firebase-analytics