ref: HangTracker integration in Swift

[github-actions]

Note

The pull request "ref: HangTracker integration in Swift" was created by @noahsmartin but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

Converts SentryANRTrackingIntegration to Swift and renames it HangTracker since that's a more appropriate name for iOS

#skip-changelog

[linear]

COCOA-1112