feat: account manager (#468)

* feat: account manager

* remove dep

* some fixes

* migrate accounts

* reimplement clearCookie

lib/utils/accounts/account_manager/README.md

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+# dio_cookie_manager
+
+[![Pub](https://img.shields.io/pub/v/dio_cookie_manager.svg)](https://pub.dev/packages/dio_cookie_manager)
+
+A cookie manager combines cookie_jar and dio, based on the interceptor algorithm.
+
+## Getting Started
+
+### Install
+
+Add the `dio_cookie_manager` package to your
+[pubspec dependencies](https://pub.dev/packages/dio_cookie_manager/install).
+
+### Usage
+
+```dart
+import 'package:cookie_jar/cookie_jar.dart';
+import 'package:dio/dio.dart';
+import 'package:dio_cookie_manager/dio_cookie_manager.dart';
+
+void main() async {
+  final dio = Dio();
+  final cookieJar = CookieJar();
+  dio.interceptors.add(CookieManager(cookieJar));
+  // First request, and save cookies (CookieManager do it).
+  await dio.get("https://dart.dev");
+  // Print cookies
+  print(await cookieJar.loadForRequest(Uri.parse("https://dart.dev")));
+  // Second request with the cookies
+  await dio.get('https://dart.dev');
+}
+```
+
+## Cookie Manager
+
+`CookieManager` Interceptor can help us manage the request/response cookies automatically.
+`CookieManager` depends on the `cookie_jar` package:
+
+> The dio_cookie_manager manage API is based on the withdrawn
+> [cookie_jar](https://github.com/flutterchina/cookie_jar).
+
+You can create a `CookieJar` or `PersistCookieJar` to manage cookies automatically,
+and dio use the `CookieJar` by default, which saves the cookies **in RAM**.
+If you want to persists cookies, you can use the `PersistCookieJar` class, for example:
+
+```dart
+dio.interceptors.add(CookieManager(PersistCookieJar()))
+```
+
+`PersistCookieJar` persists the cookies in files,
+so if the application exit, the cookies always exist unless call `delete` explicitly.
+
+> Note: In flutter, the path passed to `PersistCookieJar` must be valid (exists in phones and with write access).
+> Use [path_provider](https://pub.dev/packages/path_provider) package to get the right path.
+
+In flutter:
+
+```dart
+Future<void> prepareJar() async {
+  final Directory appDocDir = await getApplicationDocumentsDirectory();
+  final String appDocPath = appDocDir.path;
+  final jar = PersistCookieJar(
+    ignoreExpires: true,
+    storage: FileStorage(appDocPath + "/.cookies/"),
+  );
+  dio.interceptors.add(CookieManager(jar));
+}
+```
+
+## Handling Cookies with redirect requests
+
+Redirect requests require extra configuration to parse cookies correctly.
+In shortly:
+- Set `followRedirects` to `false`.
+- Allow `statusCode` from `300` to `399` responses predicated as succeed.
+- Make further requests using the `HttpHeaders.locationHeader`.
+
+For example:
+```dart
+final cookieJar = CookieJar();
+final dio = Dio()
+  ..interceptors.add(CookieManager(cookieJar))
+  ..options.followRedirects = false
+  ..options.validateStatus =
+      (status) => status != null && status >= 200 && status < 400;
+final redirected = await dio.get('/redirection');
+final response = await dio.get(
+  redirected.headers.value(HttpHeaders.locationHeader)!,
+);
+```