新增 wxPusher 推送通道。wxPusher 官方文档: https://wxpusher.zjiecode.com/docs/ (#2594)

* 增加 wxPusher 推送方式

* 补全 wxPusher 推送方式代码

* fix js 方法多进行了一次 JSON 格式化

src/locales/en-US.json

@@ -395,6 +395,9 @@
   "自建的PushMeServer消息接口地址，例如：http://127.0.0.1:3010，不填则使用官方消息接口": "The self built PushMeServer message interface address, for example: http://127.0.0.1:3010 If left blank, use the official message interface",
   "ntfy的url地址，例如 https://ntfy.sh'": "The URL address of ntfy, for example, https://ntfy.sh.",
   "ntfy的消息应用topic": "The topic for ntfy's messaging application.",
+  "wxPusherBot的appToken": "wxPusherBot's appToken, obtain according to docs https://wxpusher.zjiecode.com/docs/",
+  "wxPusherBot的topicIds": "wxPusherBot's topicIds, at least one of topicIds or uids must be configured",
+  "wxPusherBot的uids": "wxPusherBot's uids, at least one of topicIds or uids must be configured",
   "请求方法": "Request Method",
   "请求头Content-Type": "Request Header Content-Type",
   "请求链接以http或者https开头。url或者body中必须包含$title，$content可选，对应api内容的位置": "Request URL should start with http or https. URL or body must contain $title, $content is optional and corresponds to the API content position.",