sdapi/v1/sd-models missing config

Nobody has claimed this yet.

Currently when using the docs or the api to try to load our models we get an error that we are missing the config parameter.

I was able to resolve this issue by adding: `"config": None` to the get_sd_models

Like this:

```
def get_sd_models(self):
import modules.sd_models as sd_models
return [{"title": x.title, "model_name": x.model_name, "hash": x.shorthash, "sha256": x.sha256, "filename": x.filename, "config": None} for x in sd_models.checkpoints_list.values()]
```

This is probably not the best fix, but it does allow the /sdapi/v1/sd-models endpoint to load the models correctly.

Start at the get_sd_models method and reproduce the missing-config error through the /sdapi/v1/sd-models endpoint. Check how the endpoint expects the config field before choosing a fix; done means the endpoint loads and returns the models without the missing-config error.

Written by the indexing model from the issue text.