refactor: improve digraph support

[mrehan27]

part of MBL-273

Changes

• Refactored DiGraph to simplify accessing and overriding dependencies
• Added tests to validate DiGraph functionality

[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-273-digraph-base (1714159332)` * kotlin_compose: `rehan/mbl-273-digraph-base (1714159347)`

[github-actions[bot]]

Build available to test Version: rehan-mbl-273-digraph-base-SNAPSHOT Repository: https://s01.oss.sonatype.org/content/repositories/snapshots/

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 25.90%. Comparing base (48c64c9) to head (1f20942). Report is 3 commits behind head on feature/cdp.

:exclamation: Current head 1f20942 differs from pull request most recent head 2f8897e. Consider uploading reports for the commit 2f8897e to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## feature/cdp #307 +/- ## ================================================== - Coverage 54.45% 25.90% -28.56% + Complexity 282 100 -182 ================================================== Files 109 41 -68 Lines 2534 1131 -1403 Branches 355 177 -178 ================================================== - Hits 1380 293 -1087 + Misses 1032 802 -230 + Partials 122 36 -86 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.