feat: add Kotlin sample apps for all integrated kits

[denischilik]

Summary

• Add Kotlin example apps for every kit in settings-kits.gradle, following the Adjust sample pattern
• Wire examples through settings-kit-examples.gradle and kits/matrix.json for CI build-kits workflow
• Add vendor Maven repositories and multidex where needed so Apptimize, Localytics, and Singular examples build in CI

Test plan

• CI build-kits passes for kits without skip_example_builds
• ./gradlew ":kits:android-adjust:adjust-5:example-kotlin:assembleDebug" -c settings-kit-examples.gradle -Pmparticle.kit.mparticleFromMavenLocalOnly=true
• ./gradlew ":kits:android-apptimize:apptimize-3:example-kotlin:assembleDebug" -c settings-kit-examples.gradle -Pmparticle.kit.mparticleFromMavenLocalOnly=true
• ./gradlew ":kits:android-localytics:localytics-6:example-kotlin:assembleDebug" -c settings-kit-examples.gradle -Pmparticle.kit.mparticleFromMavenLocalOnly=true
• Confirm Rokt example remains skipped in matrix (skip_example_builds) until AGP 8.6+

[cursor]

PR Summary

Low Risk
Changes are limited to example apps, Gradle settings, and CI matrix—no kit runtime or SDK integration logic is modified.

Overview
Adds Kotlin example-kotlin sample apps across integrated Android kits (Adobe, AppsFlyer, Braze variants, GA/GA4, etc.), mirroring the existing Adjust pattern: minimal launcher UI, ExampleApplication that starts mParticle with placeholder credentials and logs a test event, and compileSdk/targetSdk 35.

CI integration: settings-kit-examples.gradle now includes and remaps all new example modules; kits/matrix.json lists each kit’s example_kotlin_project so build-kits runs assembleDebug on samples (Rokt keeps skip_example_builds).

Build fixes for samples: Adjust’s example is bumped from SDK 34→35; some apps enable multidex (MultiDexApplication where needed); Apptimize, Localytics, and Singular examples add vendor Maven repositories so dependencies resolve in CI.

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[cursor]

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[sonarqubecloud]

Quality Gate failed

Failed conditions
C Security Rating on New Code (required ≥ A)

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