Support multiple agents parsing, eventType, media licenses

[samleeflang]

Improve creation of Agent object:

• If value is a resolvable identifier use it as identifier (comment on previous PR)
• When multiple agents in single field parse them to different agents
  • When equal name and identifier combination assume order is the same
  • When unequal take the list with the most entries

Set default EventType to "Collecting Event"
Set recorded by as Collector on the main event

Add two fields to media regarding license

[southeo]

👖
the SetAgent() logic is tricky so nice job. I think you're mutating Lists, though, not ArrayLists, so you probably have to slightly restructure.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
95.4% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[southeo]

🍏