chore: move lifecycle observer to core module

[mrehan27]

part of: MBL-337

Changes

• Added ActivityLifecycleCallbacks observer to core module so any module can listen to it
• Exposed lifecycle flow so observers can leverage it for listening to new events and last emitted event
• Updated push and in-app module to observe newly added lifecycle callback from core
• Minor improvements in DI graph

Not Included

Tests updates are not included in this PR, will be updated in another ticket specific to test structure

[github-actions[bot]]

# Sample app builds 📱 Below you will find the list of the latest versions of the sample apps. It's recommended to always download the latest builds of the sample apps to accurately test the pull request. --- * java_layout: `rehan/mbl-337-push-lifecycle (1719906313)` * kotlin_compose: `rehan/mbl-337-push-lifecycle (1719906313)`

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 45.83333% with 13 lines in your changes missing coverage. Please review.

Project coverage is 18.92%. Comparing base (bfd8e28) to head (3b87512). Report is 54 commits behind head on feature/cdp.

Files	Patch %	Lines
...stomer/messaginginapp/gist/presentation/GistSdk.kt	0.00%	7 Missing :warning:
...o/customer/messagingpush/ModuleMessagingPushFCM.kt	58.33%	5 Missing :warning:
.../customer/messagingpush/di/DiGraphMessagingPush.kt	80.00%	0 Missing and 1 partial :warning:

:exclamation: There is a different number of reports uploaded between BASE (bfd8e28) and HEAD (3b87512). Click for more details.

HEAD has 1 upload less than BASE

| Flag | BASE (bfd8e28) | HEAD (3b87512) | |------|------|------| ||4|3|

Additional details and impacted files

```diff @@ Coverage Diff @@ ## feature/cdp #368 +/- ## ================================================== - Coverage 52.86% 18.92% -33.94% + Complexity 282 60 -222 ================================================== Files 109 39 -70 Lines 2582 1157 -1425 Branches 366 175 -191 ================================================== - Hits 1365 219 -1146 + Misses 1095 914 -181 + Partials 122 24 -98 ```

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[github-actions[bot]]

Build available to test Version: rehan-mbl-337-push-lifecycle-SNAPSHOT Repository: https://s01.oss.sonatype.org/content/repositories/snapshots/

[mrehan27]

@Shahroz16 Good point, but I'm not much concerned about it because

• This is same as in main today, so we are not adding anything extra with the change
• The number of customer not using any of other feature modules is significantly low, so the use case is very small

We can still check on modules count and skip listener if needed. But I see this being more error-prone and adding less value, so would not suggest to go with it.

[github-actions[bot]]

📏 SDK Binary Size Comparison Report

No changes detected in SDK binary size ✅