refactor: add more AnkiDroidApp profiling and refactor startup

[david-allison]

In particular, this adds AnkiContext as a means to order dependencies. I plan to add CrashReportingContext in a follow-up PR

Fixes

• Split from improvement(startup): split into methods and add timing #20593 - see this for more details

## Testing

Timber config: DEBUG
AnkiDroidApp: listing debug info
executed setupContextMenus in 885.5us
executed makeBackendUsable in 164.584us
AnkiDroidApp: Starting Services
executed setupNotifications in 8.013542ms
executed setupAppLifecycleObserver in 101.375us
executed setupBackendChangeManager in 7.502458ms
executed setupAnkiBackend in 1.263500ms
executed initializeAnkiDroidDirectory in 1.301166ms
executed setupDayRollover in 7.674542ms
executed setupLifecycleLogging in 539.584us
executed setupTextToSpeech in 1.201458ms

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[lukstbit]

Ok, for the changes with a question for the new object.

[criticalAY]

Thanks!