DeviceRegistartionFragment: Allow viewing device registartion data

[theimpulson]

Summary

This PR allows users to view the data shared with the google servers during device registration.

Test

Ensure registration data is visible

[theimpulson]

Need to look into formatting it beautifully but the string is manually generated and isn't a valid JSON. Adding GSON dependency and using that with the actual class object may be better.

[theimpulson]

[theimpulson]

@mar-v-in this is ready from my side. Please review when possible.