Draft: [ST-4786] Add React Native integration examples for Expo, RN CLI, and VegaOS

[jose-saraiva-carvalho]

Summary

Adds and reorganizes React Native integration examples in Integration-Examples to cover three modern workflows: Expo, React Native CLI, and Amazon Vega OS. Each example integrates Jscrambler via jscrambler-metro-plugin@9.0.0 and includes a .jscramblerrc configuration.

Related issue

ST-4786

Changes

Expo — ReactNative/Example-Apps/Expo/StickerSmash

• New Expo 54 app (Expo Router, React 19) created from the standard Expo template.
• Jscrambler wired through metro.config.js and .jscramblerrc.
• EAS build profiles and local build scripts for Android/iOS (eas.json, package.json scripts).
• Includes pnpm-lock.yaml, prebuild scripts, and standard Expo project structure.

React Native CLI — ReactNative/Example-Apps/ReactNativeCLI/

• react-native0.86-boilerplate: New RN 0.86 / React 19 boilerplate with Jscrambler metro integration and .jscramblerrc.
• react-native0.66-grocery-list: Legacy grocery-list example consolidated under ReactNativeCLI/ (moved from older flat paths such as react-native0.59-grocery-list, react-native0.62-grocery-list, etc.).

Vega OS — ReactNative/Example-Apps/VegaOS/

• New integration pattern for Amazon's vega-video-sample.
• Upstream app tracked as a git submodule; Jscrambler-specific files live in IntegrationConfigs/ and are applied via apply-jscrambler-integration.sh.
• README documents submodule init, integration apply, and upstream update workflow.

Cleanup / reorganization

• Removes obsolete top-level legacy example directories (react-native0.59-grocery-list, react-native0.62-grocery-list, react-native0.64-grocery-list, react-native0.66-grocery-list).
• Reorganizes React Native examples under clearer Expo/, ReactNativeCLI/, and VegaOS/ folders.

Configuration notes

• Jscrambler credentials must be filled in each example’s .jscramblerrc before building.
• Vega OS setup requires submodule initialization:

  git submodule update --init ReactNative/Example-Apps/VegaOS/vega-video-sample
  cd ReactNative/Example-Apps/VegaOS
  ./apply-jscrambler-integration.sh