Reorganize monorepo structure

* Move all config files to './configs'
* Simplify './scripts' folder.

packages/react-native-web-examples/pages/app-state/index.js

@@ -0,0 +1,36 @@
+import React from 'react';
+import { AppState, Text } from 'react-native';
+import Example from '../../shared/example';
+
+export default function AppStatePage() {
+  const appState = React.useRef(AppState.currentState);
+  const [state, setState] = React.useState({
+    active: 0,
+    background: 0,
+    currentState: appState.current
+  });
+
+  React.useEffect(() => {
+    const handleChange = (nextState) => {
+      setState((previousState) => ({
+        ...previousState,
+        [nextState]: previousState[nextState] + 1
+      }));
+    };
+
+    const subscription = AppState.addEventListener('change', handleChange);
+    return () => {
+      subscription.remove();
+    };
+  }, []);
+
+  return (
+    <Example title="AppState">
+      <Text style={{ marginTop: '1rem' }}>
+        AppState.currentState: <Text style={{ fontWeight: 'bold' }}>{state.currentState}</Text>
+      </Text>
+      <Text>Active count: {state.active}</Text>
+      <Text>Background count: {state.background}</Text>
+    </Example>
+  );
+}