Add reward verification support to AdMobIntegrationSample example app

[polmiro]

Checklist

• If applicable, unit tests
• If applicable, create follow-up issues for purchases-android and hybrids

Motivation

Add explicit Reward Verification support to the AdMob integration example app so developers can try both rewarded flows (with and without verification) from a clear, production-like sample UX.

Description

• Adds Reward Verification support to rewarded and rewarded interstitial flows in AdMobIntegrationSample.
• Refactors the sample interaction model to use a Reward Verification toggle with a single Load and Show flow per rewarded format.
• Improves rewarded result UX with clearer state transitions (loading, ready, waiting, granted, verification outcomes, and mode-change reset behavior).
• Renames sample/docs wording from "SSV" to "Reward Verification" for consistency with the RevenueCat feature name.
• Updates adapter and sample README examples to document realistic Reward Verification outcome handling.

Sample architecture cleanup

While iterating on the rewarded flow the example app was reorganized to keep each ad format easy to read and copy:

• One ad manager per format under Sources/AdManagers/, with separate verified and non-verified rewarded managers and an explicit isWaitingForReward flag tracking dismiss vs. reward outcome.
• One detail view per format under Sources/DetailViews/, with HomeView reduced to a list and a per-format router.
• Shared status copy lives in Sources/Support/Messages.swift; reusable view components (StatusAndButtons, RewardedControls, ResultCard, BannerAdView, NativeAdViewRepresentable, RootViewController) live under Sources/Components/ and Sources/Support/.
• Manager status modeled as an optional message: String? so views render through ResultCard only when there is something to report; reward outcomes persist after the ad is dismissed instead of flashing back to a "Not Loaded" placeholder.
• Format list reordered so Banner and App Open appear before Interstitial.

Screenshots

Copies and design might be slightly outdated.

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Rewarded ad with reward verification

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Rewarded interstitial ad with reward verification

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Rewarded ad with failed reward verification: simulated using ad unit configured without SSV in AdMob Dashboard

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Note

Medium Risk
Touches multiple ad-format integration paths and presentation state handling in the sample app, including new reward verification presentation callbacks, which could change event tracking behavior if miswired. Changes are isolated to sample/demo code and documentation, limiting production impact.

Overview
Adds Reward Verification support to the AdMob integration sample for both rewarded formats, including a UI toggle to load/show ads with or without verification and richer result/status reporting.

Refactors the sample from a single AdMobManager into per-format *AdManager classes plus per-format detail views and shared UI components (ResultCard, StatusAndButtons, RewardedControls), and moves ad unit IDs out of Constants into each manager.

Updates the sample and adapter READMEs to document the verification-enabled flow (enableRewardVerification() + present(...rewardVerificationStarted:/rewardVerificationResult:)) and clarifies error-testing and test ID guidance.

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[peterporfy]

LGTM - just one comment regarding example simplification

[polmiro]

@RCGitBot please test

[peterporfy]

Looks good to me!

[ajpallares]

I think it looks great! Good job! I have some comments though

[ajpallares]

Great job!

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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