[WIP] Add Dansk adresseapi and virksomhedsdata APIs to README.md

[Claude]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

---

This section details on the original issue you should resolve

<issue_title>Danskadresseapi.dk</issue_title>
<issue_description>Adressedata:
API: https://www.danskadresseapi.dk
Type: JSON
Tilgængelighed: Public

Virksomhedsdata
API: https://www.danskcvrapi.dk
Type: JSON
Tilgængelighed: Public

</issue_description>

<agent_instructions>Tilføj disse til README.MD og lav en pull request</agent_instructions>

Comments on the Issue (you are @claude[agent] in this section)

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