Cocos2d-x iOS AdMob Firebase Integration

I’m upgrading an existing Cocos2d-x 3.17.2 iOS game and need full Google stack support.
What has to be done:

• AdMob: wire in Banner, Interstitial, Rewarded, App-Open, and Rewarded-Interstitial formats through the latest Google-Mobile-Ads-SDK. Every format must accept a list of ad-unit IDs and automatically fall back to the next ID if the first request fails (or times-out) before finally reporting “no fill.”
• Firebase: add Analytics and Crashlytics, make sure screen names, ad callbacks, custom game events, and fatal/non-fatal crashes are all reported in the Firebase console.
• Code style: Objective-C++ / C++ wrappers that I can call from the Cocos2d-x layer, cleanly separated so Android can be added later.
• Deliverables: Xcode project that builds on a real device, sample scene showing each ad type, `.plist` updates, Podfile/xcworkspace, and a short README explaining where to swap ad-unit arrays and how to verify Firebase events.

Send me the ready-to-run project and I’ll confirm by loading test ads and seeing live events in Firebase.