[plugins.json] Add cocoapods-binarycb

Please add the following entry to the `plugins.json` file:

```
{
"gem": "cocoapods-binarycb",
"name": "CocoaPods Binarycb",
"author": "chenbin",
"url": "https://github.com/a296776627/cocoapods-binary",
"description": "A CocoaPods plugin based on [leavez/cocoapods-binary](https://github.com/leavez/cocoapods-binary) to integrate pods in form of prebuilt frameworks, not source code, by adding just one flag in podfile. Speed up compiling dramatically."
}
```