Add Android coverage summary to screenshot comment

[shai-almog]

Summary

• generate a Jacoco coverage summary JSON when copying the Android coverage report
• include Android coverage metrics and report link information in the screenshot PR comment renderer
• run coverage generation from the instrumentation test script and pass the summary to the renderer

Testing

• Not run (not requested)

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Codex Task

[shai-almog]

Compared 2 screenshots: 2 matched.

Native Android coverage

• 📊 Line coverage: 12.39% (1333/10763 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
  • Other counters: instruction 10.75% (5455/50756), branch 8.00% (377/4714), complexity 8.53% (364/4267), method 16.99% (310/1825), class 19.41% (59/304)
  • Lowest covered classes
    • com.codename1.impl.android.com.codename1.impl.android.AndroidContactsManager – 0.00% (0/398 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.AndroidImplementation$Video – 0.00% (0/168 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.IntentIntegrator – 0.00% (0/139 lines covered)
    • com.codename1.impl.android.util.com.codename1.impl.android.util.Base64 – 0.00% (0/117 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.CodenameOneInputConnection – 0.00% (0/109 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.AndroidImplementation$SocketImpl – 0.00% (0/77 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.AndroidTextureView – 0.00% (0/76 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.AndroidSurfaceView – 0.00% (0/73 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.LocalNotificationPublisher – 0.00% (0/65 lines covered)
    • com.codename1.impl.android.com.codename1.impl.android.FridaDetectionUtil – 0.00% (0/64 lines covered)