feat: support Lynx extension autolink

[jianliang00]

Summary

• extend sparkling autolink to discover RFC-style lynx.ext.json packages while keeping legacy module.config.json support
• generate Android and iOS autolink registries for NativeUI, NativeModules, services, and legacy Sparkling methods
• wire generated registries into the Android/iOS templates and Sparkling runtime registries

Validation

• pnpm --filter @lynx-js/sparkling-app-cli test
• ./gradlew :lynx-extensions-xelement-input:compileDebugKotlin --no-daemon in a temporary Sparkling app
• RBENV_VERSION=3.2.8 pod install in a temporary Sparkling app
• xcodebuild -workspace SparklingGo.xcworkspace -scheme SparklingGo -configuration Debug -destination id=CC54C560-C172-4AC7-A5E4-12CC919A4082 -derivedDataPath /tmp/sparkling-autolink-bnpm-e2e-derived build
• installed and launched the temporary iOS app on the iPhone 16 Pro simulator with @lynx-extensions/xelement-input@0.0.2 from bnpm

Notes

• Android app integration still needs a published Sparkling Maven artifact that contains the new autolink runtime classes; the extension module itself compiles successfully.