feat(ios): implement URLProtocol-based network interceptor

[imsankalp]

Summary

Brings iOS to full parity with Android. Every fetch / XMLHttpRequest / axios call made through React Native's networking layer is now captured on iOS, stored, and emitted as a NetworkTools:onRequest event — exactly matching the Android behaviour.

New files

File	Purpose
ios/NetworkToolsInterceptor.{h,m}	NSURLProtocol subclass — intercepts all HTTP/HTTPS URLSession traffic; prevents infinite recursion via a request property key; caps body capture at 256 KB; skips binary MIME types
ios/NetworkToolsStorage.{h,m}	Thread-safe NSLock-backed singleton, max 100 requests (mirrors NetworkRequestStorage.kt)
ios/NetworkToolsManager.{h,m}	Singleton — +activate registers the URLProtocol (#if DEBUG only); holds a weak RCTEventEmitter reference for JS event emission

Updated files

ios/NetworkTools.h / .mm — NetworkTools now extends RCTEventEmitter (in addition to implementing NativeNetworkToolsSpec) so NetworkTools:onRequest events flow through the standard DeviceEventEmitter on both old-arch (bridge) and new-arch (TurboModule/JSI). getTurboModule: retained for new arch.

NetworkTools.podspec — NetworkToolsManager.h is now a public header so Swift AppDelegates can call NetworkToolsManager.activate() after import NetworkTools.

Expo plugin — applySwiftAppDelegatePatch and applyObjcAppDelegatePatch added. withNetworkTools now patches both MainApplication (Android) and AppDelegate (iOS) in a single expo prebuild run. Android snippets also updated to include the BuildConfig.DEBUG guard (forward-ports #14/#15).

example/ios/.../AppDelegate.swift — #if DEBUG NetworkToolsManager.activate() #endif added.

README.md — iOS marked ✅ Supported; setup instructions cover both platforms.

Architecture

iOS URLSession request
       ↓
NetworkToolsInterceptor.canInitWithRequest:  → YES (http/https, not already handled)
       ↓
startLoading: capture request body, tag request, forward via ephemeral URLSession
       ↓
NSURLSessionDataDelegate callbacks collect response chunks
       ↓
didCompleteWithError: forward to client, call recordWithError:
       ↓
NetworkToolsStorage.addRequest:    (in-memory, thread-safe, max 100)
NetworkToolsManager.emitRequest:   → [RCTEventEmitter sendEventWithName:body:]
       ↓
JS NativeEventEmitter "NetworkTools:onRequest"
       ↓
NetworkMonitorContext → FloatingNetworkMonitor UI

Test plan

• All 41 JS/plugin tests pass (yarn jest)
• pod install in example/ios succeeds with the new source files
• yarn ios on simulator — requests from the example app appear in the floating monitor
• Release build (xcodebuild -configuration Release) — NetworkToolsManager.activate() is not called (#if DEBUG compiled out), URLProtocol not registered
• expo prebuild on a fresh Expo iOS project → AppDelegate.swift contains import NetworkTools and the #if DEBUG activation block

Closes #13