handle people address from ro-crate json

[jorgitogb]

Describe the bug
using JsonController.Investigation().from_rocrate_json_string() only can handle address as a str
To Reproduce
Steps to reproduce the behavior:

A valid schema.org person:

{
"@context": "http://schema.org",
"@type": "Person",
"address": {
"@type": "PostalAddress",
"addressCountry": "Germany",
"addressLocality": "Musterstadt",
"postalCode": "12345",
"streetAddress": "Maxstraße 42"
},
"familyName": "Musterfrau",
"givenName": "Erika",
"name": "Erika Musterfrau"
}

ARC compatible version:

{
"@context": {
"@vocab": "http://schema.org/"
},
"@type": "Person",
"address": "Maxstraße 42, 12345 Musterstadt, Germany"
"familyName": "Musterfrau",
"givenName": "Erika",
}

Expected behavior
handle str and obj representation of an address

[HLWeil]

Hey @jorgitogb,
thanks for bringing this issue up. This was also something I discussed with @Zalfsten, and it's definitely something that will be handled in ARCtrl.

We're currently working on a big restructure of the whole parsing and handling of the ARC RO-Crate representation. Until that is finished (Hopefully this year), it would be nice if you could handle this on your side (e.g. put the json object as a blob into a string).

If there's progress on this issue I will update you here.