Configure coverage through common convention plugins

[gpunto]

Goal

AND-892

As the title says, we're moving to the common coverage convention instead of configuring it in here.

Implementation

Remove the custom coverage configuration logic and rely on the plugins

Testing

Coverage should be reported correctly to Sonar

Checklist

• Issue linked (if any)
• Tests/docs updated
• I have signed the Stream CLA (required for external contributors)

[github-actions]

PR checklist ✅

All required conditions are satisfied:

• Title length is OK (or ignored by label).
• At least one pr: label exists.
• Sections ### Goal, ### Implementation, and ### Testing are filled.

🎉 Great job! This PR is ready for review.

[Copilot]

Pull request overview

This PR migrates coverage configuration from custom Gradle scripts to convention plugins maintained in the streamConventions dependency. The migration simplifies the build configuration by removing manual setup of Kover and SonarQube plugins.

Key Changes:

• Removed custom gradle/scripts/sonar.gradle and gradle/scripts/coverage.gradle configuration files
• Replaced explicit Kover and SonarQube plugin declarations with convention-based approach
• Configured coverage through the streamProject DSL with includedModules set

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
build.gradle.kts	Removed sonar.gradle import and plugin declarations; added coverage configuration block with module specification
stream-android-core/build.gradle.kts	Removed explicit Kover and SonarQube plugin applications
gradle/libs.versions.toml	Removed Kover and SonarQube plugin version entries; updated streamConventions version to "local-test"
gradle/scripts/sonar.gradle	Deleted custom SonarQube configuration script
gradle/scripts/coverage.gradle	Deleted custom Kover coverage configuration script

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud