workflow-run: add resourceUsage

[simleo]

See ResearchObject/workflow-run-crate#10 for the background.

Example:

{
    "@id": "#28/7f2737",
    "@type": "CreateAction",
    "instrument": {"@id": "tutorial.nf#convertToUpper"},
    "resourceUsage": [
        {
            "@id": "#28/7f2737-realTime"
        },
        {
            "@id": "#28/7f2737-percentCPU"
        }
    ]
},
{
    "@id": "#28/7f2737-realTime",
    "@type": "PropertyValue",
    "name": "realTime",
    "propertyID": "https://w3id.org/ro/terms/nf-trace#realTime",
    "unitCode": "https://qudt.org/vocab/unit/MilliSEC",
    "value": "12"
},
{
    "@id": "#28/7f2737-percentCPU",
    "@type": "PropertyValue",
    "name": "percentCPU",
    "propertyID": "https://w3id.org/ro/terms/nf-trace#percentCPU",
    "value": "80.0"
}