fix: declare tvos platform in podspec

[aigeneratedpiece]

Summary

Fixes #30

The tvOS app is crashing at runtime. I don't have much experience with native code so I got an assistance from Codex. Here's the explanation of the problem:

react-native-ease registers a Fabric component on Apple targets, but the podspec only declared :ios in
Ease.podspec:13.

In a tvOS Expo app, autolinking still generates the RCTThirdPartyComponentsProvider entry for
EaseView, but CocoaPods does not build/link the native class for tvOS. At startup React Native builds the provider dictionary, one of the values is nil, and it crashes with the exact NSDictionary ... attempt to insert nil object exception.

This PR patches the podspec to declare tvOS support in Ease.podspec:11. The native iOS code in ios/EaseView.mm does not appear to use obviously iOS-only APIs, so the registration mismatch is the real issue.

This PR is generated by Codex

[janicduplessis]

Thanks, looks good!