Gamend.Payments.StoreEvents (gamend_core v1.0.1296)

Apple App Store and Google Play server notifications: verifying them, recording them once, and applying what they say to purchases and entitlements.

Split out of Gamend.Payments, which still exposes every function here under the same name.

Summary

@spec handle_apple_webhook(binary()) :: {:ok, atom()} | {:error, term()}

@spec handle_google_webhook(binary(), binary() | nil) ::
  {:ok, atom()} | {:error, term()}