Separate data-resource description and location

[Zarquan]

The current data-resource combines the description of the data and the location of the data.

{
"uuid": "b77cc829-ac12-43b5-9dbe-48cfa727d14c",
"description": "Raw images",
"type": "urn:download-url",
"url": "",
"data-type": "urn:astronomy-image-data",
"mime-type": "image/fits"
}

Separating the data-resource description from the location makes it clearer who sets what.

{
"uuid": "b77cc829-ac12-43b5-9dbe-48cfa727d14c",
"type": "urn:basic-data-resource",
"description": "Raw images",
"data-type": "urn:astronomy-image-data",
"mime-type": "image/fits"
"location": {
    "type": "urn:rucio-datalake",
    "endpoint": "",
    "domain": "",
    "object": ""
    }
}

In this example the data-resource type (urn:basic-data-resource) is set by the task curator, and the location type (urn:rucio-datalake) is set by the user choosing the data they want to use.