feat: add maestro E2E test app

e2e-tests/MaestroTestApp/.gitignore

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+# OSX
+.DS_Store
+
+# Xcode
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+**/.xcode.env.local
+
+# Android/IntelliJ
+.idea
+.gradle
+local.properties
+*.iml
+*.hprof
+.cxx/
+*.keystore
+!debug.keystore
+
+# node.js
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# Ruby / CocoaPods
+**/Pods/
+/vendor/bundle/
+
+# Bundle artifact
+*.jsbundle
+
+# Temporary files created by Metro to check the health of the file watcher
+.metro-health-check*
+
+# Yarn
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions

e2e-tests/MaestroTestApp/App.tsx

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+import React, {useEffect} from 'react';
+import {NavigationContainer} from '@react-navigation/native';
+import {createNativeStackNavigator} from '@react-navigation/native-stack';
+import Purchases from 'react-native-purchases';
+import TestCasesScreen from './src/TestCasesScreen';
+import PurchaseThroughPaywallScreen from './src/PurchaseThroughPaywallScreen';
+
+const Stack = createNativeStackNavigator();
+
+const API_KEY = 'MAESTRO_TESTS_REVENUECAT_API_KEY';
+
+export default function App() {
+  useEffect(() => {
+    Purchases.setLogLevel(Purchases.LOG_LEVEL.DEBUG);
+    Purchases.configure({apiKey: API_KEY});
+  }, []);
+
+  return (
+    <NavigationContainer>
+      <Stack.Navigator>
+        <Stack.Screen
+          name="TestCases"
+          component={TestCasesScreen}
+          options={{title: 'Test Cases'}}
+        />
+        <Stack.Screen
+          name="PurchaseThroughPaywall"
+          component={PurchaseThroughPaywallScreen}
+          options={{title: 'Purchase through paywall'}}
+        />
+      </Stack.Navigator>
+    </NavigationContainer>
+  );
+}

e2e-tests/MaestroTestApp/app.json

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+{
+  "name": "MaestroTestApp",
+  "displayName": "MaestroTestApp"
+}

e2e-tests/MaestroTestApp/babel.config.js

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+module.exports = {
+  presets: ['module:@react-native/babel-preset'],
+};

e2e-tests/MaestroTestApp/index.js

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+import {AppRegistry} from 'react-native';
+import App from './App';
+import {name as appName} from './app.json';
+
+AppRegistry.registerComponent(appName, () => App);

e2e-tests/MaestroTestApp/ios/.xcode.env

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+# This `.xcode.env` file is versioned and is used to source the environment
+# used when running script phases inside Xcode.
+# To customize your local environment, you can create an `.xcode.env.local`
+# file that is not versioned.
+
+# NODE_BINARY variable contains the PATH to the node executable.
+#
+# Customize the NODE_BINARY variable here.
+# For example, to use nvm with brew, add the following line
+# . "$(brew --prefix nvm)/nvm.sh" --no-use
+export NODE_BINARY=$(command -v node)