## Detailed Description Have an option not to `joinedload` on forecast_values and not to add utc timezone ## Context - helps speed up api - tested it locally and saves about 1 second ## Possible Implementation add option to include or not [here](https://github.com/openclimatefix/nowcasting_datamodel/blob/main/nowcasting_datamodel/read/read.py#L337) and [here](https://github.com/openclimatefix/nowcasting_datamodel/blob/main/nowcasting_datamodel/read/read.py#L350)
