Support for TrinoRetrievalJob for FeastExampleGen

Hi, 
I am using FeastExampleGen for data retrieval from a feature store.
My data is stored in Trino.

While doing this, am facing this error. 

```
NotImplementedError: Support for class < ' 'feast.infra.offline_stores.contrib.trino_offline_store.trino.TrinoRetrievalJob '>. For now we only supoort BigQuery Source. 
```
