refactor: rename example to paper-example (#2509)

# Summary

Rename example app to match the pattern.

apps/paper-example/metro.config.js

@@ -0,0 +1,49 @@
+const { getDefaultConfig, mergeConfig } = require('@react-native/metro-config');
+
+/**
+ * Metro configuration
+ * https://reactnative.dev/docs/metro
+ *
+ * @type {import('metro-config').MetroConfig}
+ */
+const path = require('path');
+const exclusionList = require('metro-config/src/defaults/exclusionList');
+const escape = require('escape-string-regexp');
+const pack = require('../../package.json');
+
+const root = path.resolve(__dirname, '../..');
+const projectNodeModules = path.join(__dirname, 'node_modules');
+
+const modules = [...Object.keys(pack.peerDependencies)];
+
+const config = {
+  projectRoot: __dirname,
+  watchFolders: [root],
+
+  // We need to make sure that only one version is loaded for peerDependencies
+  // So we exclude them at the root, and alias them to the versions in example's node_modules
+  resolver: {
+    blacklistRE: exclusionList(
+      modules.map(
+        (m) =>
+          new RegExp(`^${escape(path.join(root, 'node_modules', m))}\\/.*$`)
+      )
+    ),
+    nodeModulesPaths: [projectNodeModules, path.join(__dirname, '../../')],
+    extraNodeModules: modules.reduce((acc, name) => {
+      acc[name] = path.join(__dirname, 'node_modules', name);
+      return acc;
+    }, {}),
+  },
+
+  transformer: {
+    getTransformOptions: async () => ({
+      transform: {
+        experimentalImportSupport: false,
+        inlineRequires: true,
+      },
+    }),
+  },
+};
+
+module.exports = mergeConfig(getDefaultConfig(__dirname), config);