iOS experiments installation

pod "PostHog", "~> 3.0"

dependencies: [
  .package(url: "https://github.com/PostHog/posthog-ios.git", from: "3.0.0")
]

import Foundation
import PostHog
import UIKit

class AppDelegate: NSObject, UIApplicationDelegate {
    func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
        let POSTHOG_API_KEY = "<ph_project_api_key>"
        let POSTHOG_HOST = "https://us.i.posthog.com"

        let config = PostHogConfig(apiKey: POSTHOG_API_KEY, host: POSTHOG_HOST)
        PostHogSDK.shared.setup(config)

        return true
    }
}

if (PostHogSDK.shared.getFeatureFlag("your-experiment-feature-flag") as? String == "test") {
    // do something
} else {
    // It's a good idea to let control variant always be the default behaviour,
    // so if something goes wrong with flag evaluation, you don't break your app.
}