Schedules tvg styles

https://jira.dev.bbc.co.uk/browse/IPLAYER-19534

Needed to update the broadcast model to add the following methods:

* isSimulcast
* isCatchUp
* isAvailableToWatch
* isComingSoon
Based on how you're using this, I'd recommend creating a function
```php
 private function _createStatusBroadcast($status = 'available') {
}
```