Setup Firebase Crashlytics

[prabhanshuguptagit]

This sets up Firebase and reports crashes to Crashlytics. Link to dashboard.

Notes

• I was only able to build the prod flavor (--flavor prod), got this error otherwise

Execution failed for task ':app:processStagingDebugGoogleServices'.
> No matching client found for package name 'org.tramline.ueno.staging'

• It seems like it's ok to commit google-service.json and firebase_options.dart to public repositories (from here and here) so I've left them in for convenience. I can re-configure and wipe before merge if we don't want them public.

• The events are being logged under the Ueno style app. I've tested it by throwing a few exceptions. I'm not sure why it picked that one over Ueno android – I suspect it has something to do with the application ID in build.gradle.

[kitallis]

Thx ❇️

Tested it locally, works.

I also added a random non-fatal error at boot that gets sent to both Bugsnag + Crashlytics. And I merged main, that changes the default bundle to be com.tramline.ueno so it'll show up under Ueno Android on Firebase.