Added optional attribute for validation report

[heuerfin]

Description

Added optional attribute for a validation report in OSITrace shacl and example.

Type of change

• Change (non-breaking change or fix on an existing type)

How Has This Been Tested?

Run github pipeline checks locally and in github actions.

Checklist

• My code follows the modelling guidelines of this project
• I have performed a self-review of my own changes

[pmai]

Looks good; such an attribute might however make sense for all asset classes (common content quality attribute) going forward.

One might also want to add a mime type attribute giving the type/format of the report (pdf, xqar, ...), so that no content sniffing is needed. And might be a repeatable field (multiple different aspects being validated; and/or different formats). But as said this would be more for the future.

[heuerfin]

ood; such an attribute might however make sense for all asset classes (common content quality attribute) going forward.

One might also want to add a mime type attribute giving the type/format of the report (pdf, xqar, ...), so that no content sniffing is needed. And might be a repeatable fi

I've added a baisc attribute for type. I'm currently not aware of any xsd or shacl compatible with mime-type so i kept it at xsd:string and added it in the description. Maybe @robertschubert knows a type for mime-type. And since it is fine for you, I'll add now @robertschubert also as reviewer since the technical review is done.