v0.1.0 of zuraffa_purchase_android

Android adapter for zuraffa_purchase — the Play Billing store behind a typed port, reached through package:in_app_purchase. Changelog excerpt: - Initial release of the Android adapter: Play Billing, reached through `package:in_app_purchase`and `in_app_purchase_android`. - `registerAndroidPurchaseDependencies`registers the `StoreApi`on the locator; `registerPurchaseDependencies`then wires the purchase port, the service and the subscription store over it. - `AndroidPurchaseException`classifies the native failure codes and marks the recoverable ones. - `in_app_purchase_android`is pinned to `^0.5.5`, so the app's Android build resolves the[...]