Add Support for Swift Concurrency

[Mackarous]

Summary

Currently, if using the SDK in a project that enables strict concurrency checking, Xcode will complain that the Amplitude object is not marked as Sendable and is not concurrency safe.

To circumvent these warnings (which may become errors in Swift 6), we can mark the library as @preconcurrency

@preconcurrency import AmplitudeSwift

Motivations

Swift Concurrency is becoming a large part of the Swift language, and moving into 6.0 will be important to add support. This might mean exposing a different kind of object, or migrating the Amplitude class itself to an actor.

[crleona]

Hi @Mackarous - this is planned but we do not yet have an ETA.

[tareksabry1337]

@crleona Xcode 16 is around the corner, any plans to get this done?