Description

Track app start data for cold/warm/hot app starts.

Besides tracking the overall duration (P-Y provides a great introduction for Android here) it would be even more valuable to see which components contribute to the app start.

• Track ContentProvider.onCreate calls (using bytecode instrumentation)
• Track Application.onCreate call (using bytecode instrumentation)
• Track Activity.onCreate/onStart/onResume calls, note: there could be multiple Activities until the first frame is drawn (known as Trampoline Activities)

Related discussion: getsentry/team-sdks#22

Slack-Channel:
#discuss-mobile-starfish

### Tasks
- [x] Track overall app start time
- [x] Android: Instrument Application and ContentProvider
- [x] Android: Track Activities

### Followups
- [ ] Android: Collect Room method names to group db.sql.room spans better