feat: React Native New Architecture (Bridgeless) support

[plrthink]

Summary

Closes #330

This PR migrates react-native-zip-archive to support React Native 0.76 New Architecture (Fabric + TurboModules) with Bridgeless mode enabled.

Library Changes

iOS:

• Add RCTTurboModuleRegistry and getTurboModule: returning NativeZipArchiveSpecJSI for Bridgeless registration
• Fix podspec install_modules_dependencies check and flatten header_search_paths
• Fix encryption default inconsistency: empty encryptionType now defaults to standard ZipCrypto (matching Android)
• Add old-arch fallback via #ifdef RCT_NEW_ARCH_ENABLED guards in header and implementation
• Cache methodQueue dispatch queue instead of creating a new one on every call

Android:

• Add conditional com.facebook.react plugin and codegen sourceSets when newArchEnabled=true
• Add Paper (Old Architecture) fallback spec at android/src/oldarch/NativeZipArchiveSpec.java
• Fix illegal SSZipArchive symbol in build.gradle
• Fix unzipAssets for compressed assets: AssetManager.openFd() fails for .zip files stored compressed in the APK; now falls back to InputStream.available()
• Add null check for f.listFiles() in processZip to prevent NPE

JS:

• Implement lazy TurboModule loading to avoid Bridgeless init crash
• Update unit tests for lazy loading behavior

Playground (New Expo 52 App)

• Create Expo dev-client playground with expo-router
• Enable newArchEnabled=true in app.json
• Demo screens: zip, unzip, password, progress, benchmarks, assets
• Fix nested file creation (ensureDir before write)
• Add listFilesRecursive utility for displaying extracted nested files
• Add expo-document-picker explicitly (pnpm transitive dep fix)

E2E Testing

• Add Maestro flows for iOS and Android
• Handle iOS dev-client launcher (tap Metro URL)
• Handle Android cold-start with 45s timeout
• Add assets.yaml flow for Android unzipAssets demo
• Add npm scripts: e2e:ios, e2e:android, e2e
• Add shell scripts for sequential test execution

Test Results

Platform	Flow	Result
iOS	home	✅
iOS	zip-and-unzip	✅
iOS	password	✅
iOS	progress	✅
Android	home	✅
Android	zip-and-unzip	✅
Android	password	✅
Android	progress	✅
Android	assets	✅
Unit tests	27/27	✅

Breaking Changes

Requires React Native >= 0.70.0. New Architecture is opt-in (enabled via newArchEnabled=true in consuming app).

---

[plrthink]

Fixed in commit d08ce66. Added a null check before Arrays.asList(f.listFiles()) — if listFiles() returns null (e.g., directory unreadable due to permissions), we now fall back to an empty ArrayList instead of throwing NPE.

[plrthink]

Fixed in commit ef43fc5. Added a methodQueue property to RNZipArchive.h and changed the getter in RNZipArchive.mm to lazily initialize and cache the serial dispatch queue, preventing a new queue from being created on every call.

[plrthink]

Fixed in commit 71d099d. Changed the private helper to catch Exception instead of IOException (covers ZipException which extends Exception), and wrapped the public method in try-catch so it rejects the promise with a proper error message instead of crashing.