feat(push): add OPPO and vivo push plugins, bump JPush to 6.1.0

- Add withOppoPush.js and withVivoPush.js config plugins
- Register new plugins in app.json
- Bump JPush version from 5.8.0 to 6.1.0 in Honor/Huawei/Xiaomi plugins

plugins/withXiaomiPush.js

@@ -16,7 +16,7 @@ const path = require('path');
 // 串行、可靠，幂等检查保证可重复执行 prebuild。
 const withXiaomiPush = (config, options = {}) => {
   const {
-    jpushVersion = '5.8.0',
+    jpushVersion = '6.1.0',
     appId = '2882303761520539252',
     appKey = '5792053978252',
   } = options;