Add empty example (#2564)

## Description

This PR adds empty example to our example app. It can be helpful when it comes to testing reproductions from issues or just some new features/ideas. You can find similar idea in `react-native-reanimated` and it is very useful.

## Test plan

Tested (?) on example app

Author: m-bert

example/src/App.tsx

@@ -45,6 +45,8 @@ import BetterHorizontalDrawer from './new_api/betterHorizontalDrawer';
 import ManualGestures from './new_api/manualGestures';
 import VelocityTest from './new_api/velocityTest';
 
+import EmptyExample from './empty/EmptyExample';
+
 interface Example {
   name: string;
   component: React.ComponentType;
@@ -55,6 +57,10 @@ interface ExamplesSection {
 }
 
 const EXAMPLES: ExamplesSection[] = [
+  {
+    sectionTitle: 'Empty',
+    data: [{ name: 'Empty Example', component: EmptyExample }],
+  },
   {
     sectionTitle: 'Basic examples',
     data: [

example/src/empty/EmptyExample.tsx

@@ -0,0 +1,19 @@
+import React from 'react';
+import { StyleSheet, Text, View } from 'react-native';
+
+export default function EmptyExample() {
+  return (
+    <View style={styles.container}>
+      <Text>Hello World!</Text>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+    backgroundColor: '#F5FCFF',
+  },
+});