Complete ScriptableDroid Android app implementation with JavaScript automation

[Copilot]

This PR transforms the ScriptableDroid repository from a concept with just a README into a fully functional Android application that provides JavaScript automation capabilities similar to iOS Scriptable.

What's New

Complete Android Application: Built a production-ready Android app with Material Design UI that allows users to write, save, and execute JavaScript scripts with access to device APIs.

JavaScript Execution Engine: Integrated Duktape JavaScript engine to provide a secure sandboxed environment for running user scripts with custom Android APIs exposed to JavaScript.

Script Management System: Implemented full CRUD operations for scripts with persistent storage using SharedPreferences and JSON serialization.

Code Editor with Syntax Highlighting: Added Sora Code Editor with JavaScript language support, providing a professional development experience directly on the device.

Key Features

• Script Editor: Full-featured JavaScript code editor with syntax highlighting
• Device APIs: Battery level and charging state accessible from JavaScript via Device.batteryLevel() and Device.batteryState()
• Script Library: Save, organize, and manage multiple scripts with descriptions
• Material Design UI: Modern Android interface with RecyclerView, FAB, and card-based layouts
• Example Scripts: Pre-loaded scripts demonstrating battery monitoring and notification creation

Technical Implementation

The app is built using:

• Kotlin for Android development with modern Android architecture
• Duktape-Android for secure JavaScript execution
• Sora Code Editor for syntax-highlighted code editing
• Material Design 3 components for consistent UI/UX
• Gson for JSON serialization of script data

JavaScript API Examples

// Get battery information
const batteryLevel = Device.batteryLevel();
const batteryState = Device.batteryState();
console.log(`Battery: ${batteryLevel}% (${batteryState})`);

// Create notifications (placeholder implementation)
Notification.create("ScriptableDroid", "Hello from JavaScript!");

Build System

• Complete Gradle configuration with wrapper for cross-platform building
• GitHub Actions CI/CD pipeline for automated testing and building
• ProGuard rules for release optimization
• Vector-based launcher icons with adaptive icon support

Documentation

Updated README with comprehensive build instructions, API documentation, contribution guidelines, and example usage scenarios.

This implementation provides Android users with a powerful JavaScript automation platform, filling the gap left by the lack of Scriptable on Android. Users can now create custom scripts to interact with their device, automate tasks, and potentially create custom widgets (planned for future releases).

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