supports adding DltResource in RESTAPIConfig dict

[willi-mueller]

Description

Related Issues

• Resolves #1837

TODO before merging

• [x] write documentation
• [x] discuss: some kind of error message in case people implement a resource returning Generator[dict[str, Any]] instead of `Generator[list[dict[str, Any]]]? Or is documentation enough?

Crashes: process_parent_data_item because item is a str instead of Dict[str, Any]:

 def repositories():
        """A seed list of repositories to fetch"""
        yield from [{"name": "dlt"}, {"name": "verified-sources"}, {"name": "dlthub-education"}]

Correct:

 def repositories():
        """A seed list of repositories to fetch"""
        yield [{"name": "dlt"}, {"name": "verified-sources"}, {"name": "dlthub-education"}]

Also correct:

def repositories():
    """A seed list of repositories to fetch"""
    yield [
        [{"name": "dlt"}],
        [{"name": "verified-sources"}],
        [{"name": "dlthub-education"}],
    ]

[netlify[bot]]

✅ Deploy Preview for dlt-hub-docs ready!

Name	Link
🔨 Latest commit	f37ffa468c5de929c0d2c5657439c38893715b7e
🔍 Latest deploy log	https://app.netlify.com/sites/dlt-hub-docs/deploys/66f2d987d489f60008d5792f
😎 Deploy Preview	https://deploy-preview-1865--dlt-hub-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.