[plugins.json] Add cocoapods--tyme-amicable

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

```
{
"gem": "cocoapods--tyme-amicable",
"name": "CocoaPods Tyme Amicable",
"author": "Vi Nguyen",
"url": "https://github.com/segiddins/cocoapods-amicable",
"description": "A CocoaPods plugin that moves the Podfile checksum to a file in the Sandbox, reducing merge conflicts for teams that don't commit their Pods directory."
}
```