add isAndroid flag

src/lib/utils/platform.ts

@@ -0,0 +1,8 @@
+import { Capacitor } from '@capacitor/core';
+import { Device } from '@capacitor/device';
+
+export const isAndroid = Capacitor.getPlatform() === 'android';
+
+export async function getDeviceInfo() {
+  return await Device.getInfo();
+}