add shenyan-app RN project + PWA push/noise updates

shenyan-app/metro.config.js

@@ -0,0 +1,11 @@
+const { getDefaultConfig, mergeConfig } = require('@react-native/metro-config');
+
+/**
+ * Metro configuration
+ * https://reactnative.dev/docs/metro
+ *
+ * @type {import('@react-native/metro-config').MetroConfig}
+ */
+const config = {};
+
+module.exports = mergeConfig(getDefaultConfig(__dirname), config);