feat : apk updater

packages/core/lib/utils/apk_updater.dart

@@ -0,0 +1,22 @@
+import 'dart:io';
+
+import 'package:dio/dio.dart';
+import 'package:flutter/services.dart';
+import 'package:path_provider/path_provider.dart';
+
+class ApkUpdater {
+  static const _channel = MethodChannel('apk_installer');
+
+  static Future<void> downloadAndInstall() async {
+    final dio = Dio();
+    final apkUrl = "https://yourdomain.com/app.apk";
+
+    final dir = await getExternalStorageDirectory();
+    final path = "${dir!.path}/update.apk";
+    final file = File(path);
+
+    await dio.download(apkUrl, path);
+
+    await _channel.invokeMethod("installApk", {"path": path});
+  }
+}