Add Android edge-to-edge support for all activities

[Copilot]

This PR implements comprehensive Android edge-to-edge support across all activities in the syntax highlighter app to address compatibility issues with Android 15.

Changes Made

Theme Updates

• Updated base AppTheme with windowLayoutInDisplayCutoutMode for edge-to-edge display
• Added API 23+ theme variation (values-v23/) with transparent status bar and light status bar support
• Added API 29+ theme variation (values-v29/) with enhanced edge-to-edge support including:
  • Transparent navigation bar
  • Light navigation bar support
  • Disabled status bar and navigation bar contrast enforcement

Activity Updates

All activities now properly support edge-to-edge display:

View-based Activities (MainActivity, HighlightJsDemoActivity, PrismJsDemoActivity):

• Added enableEdgeToEdge() call before setContentView()
• Implemented proper window insets handling using ViewCompat.setOnApplyWindowInsetsListener()
• Added necessary imports for androidx.activity.enableEdgeToEdge and androidx.core.view APIs

Compose-based Activity (PrismJsComposeDemoActivity):

• Added enableEdgeToEdge() call before setContent()
• Updated composable to use windowInsetsPadding(WindowInsets.systemBars) modifier

Layout Updates

• Added root container IDs to all activity layouts to enable proper insets handling
• Maintained existing layout structure while ensuring compatibility with system bars

Implementation Details

The implementation follows Google's official edge-to-edge guidelines and ensures:

1. System bars are transparent - Content can draw behind status and navigation bars
2. Proper inset handling - UI elements don't overlap with system bars
3. API level compatibility - Progressive enhancement across different Android versions
4. Minimal visual changes - Maintains existing app appearance while adding edge-to-edge support

Testing

The changes maintain backward compatibility and should work seamlessly across all supported Android versions (API 29+). The app will now properly utilize the full screen real estate on Android 15 while respecting system bars.

Fixes #87.

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• dl.google.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens=java.xml/javax.xml.namespace=ALL-UNNAMED -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp /home/REDACTED/.gradle/wrapper/dists/gradle-8.11.1-bin/bpt9gzteqjrbo1mjrsomdt32c/gradle-8.11.1/lib/gradle-daemon-main-8.11.1.jar -javaagent:/home/REDACTED/.gradle/wrapper/dists/gradle-8.11.1-bin/bpt9gzteqjrbo1mjrsomdt32c/gradle-8.11.1/lib/agents/gradle-instrumentation-agent-8.11.1.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.11.1 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to my firewall allow list

[hossain-khan]

Changes look good