Added support for Android 15.

[MohitMaliFtechiz]

Fixes #3990

• Updated Gradle and kotlin versions.
• Updated related dependency to their latest version.
• Added kotlin-ksp in the project since gradle 2.0+ needs ksp instead of kapt.
• Upgraded the dagger version to 2.53.1.
• Upgraded the ksp version to 2.0.0-1.0.24.
• Upgraded the kotlin version to 2.0.0.
• Upgraded the objectbox version to 4.0.3.
• Removed the deprecated runBlockingTest from test cases which was giving compilation errors because it is permanently removed in this version of kotlin.
• Replaced some deprecated methods with new methods that are deprecated in the latest version of Gradle.
• Fixed some string lint issues.
• Enabled EdgeToEdge mode in the project to support the latest windowInset API.
• Fixed: The recyclerview content was overlapping on the status bar.
• Improved the full-screen mode, as the systemBars(3 buttons at the bottom) were visible in full-screen mode.
• Added backward compatibility for edgeToEdge mode to support all Android versions.
• Added Android 15 emualtor in CI to run test cases on it.

[codecov]

Codecov Report

Attention: Patch coverage is 55.93220% with 26 lines in your changes missing coverage. Please review.

Project coverage is 56.98%. Comparing base (061249a) to head (cd6d5e2).
Report is 23 commits behind head on main.

Files with missing lines	Patch %	Lines
.../kiwixmobile/core/extensions/FragmentExtensions.kt	25.00%	8 Missing and 1 partial ⚠️
.../org/kiwix/kiwixmobile/core/error/ErrorActivity.kt	0.00%	4 Missing ⚠️
...iwix/kiwixmobile/core/extensions/ViewExtensions.kt	77.77%	3 Missing and 1 partial ⚠️
...rc/main/java/org/kiwix/kiwixmobile/core/CoreApp.kt	0.00%	1 Missing and 1 partial ⚠️
...va/org/kiwix/kiwixmobile/core/base/BaseActivity.kt	60.00%	1 Missing and 1 partial ⚠️
...va/org/kiwix/kiwixmobile/core/base/BaseFragment.kt	33.33%	1 Missing and 1 partial ⚠️
.../kiwixmobile/core/extensions/ActivityExtensions.kt	0.00%	2 Missing ⚠️
...wix/kiwixmobile/core/utils/SharedPreferenceUtil.kt	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #4147   +/-   ##
=========================================
  Coverage     56.98%   56.98%           
- Complexity     1517     1519    +2     
=========================================
  Files           313      313           
  Lines         13373    13399   +26     
  Branches       1655     1662    +7     
=========================================
+ Hits           7620     7636   +16     
- Misses         4604     4613    +9     
- Partials       1149     1150    +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.