Yummy - delicious Feast extension

Yummy project adds possiblity to run Feast on multiple backends:
This gives flexibility in setting up the feature store on existing environments and using its capabilities. Moreover using Yummy you can combine multiple and different datasources during historical fetch task.
| Sources/Backends | Spark | Polars | Dask | Ray |
|---|---|---|---|---|
| Iceberg Source | ✔️ | ❌ | ❌ | ❌ |
| Delta Source | ✔️ | ✔️ | ✔️ | ✔️ |
| Parquet Source | ✔️ | ✔️ | ✔️ | ✔️ |
| CSV Source | ✔️ | ✔️ | ✔️ | ✔️ |
Why ?
Here is short explanation why we need yummy: