Add arbeitsamt (#2712)

README.md

@@ -992,6 +992,7 @@ API | Description | Auth | HTTPS | CORS |
 API | Description | Auth | HTTPS | CORS |
 |---|---|---|---|---|
 | [Adzuna](https://developer.adzuna.com/overview) | Job board aggregator | `apiKey` | Yes | Unknown |
+| [Arbeitsamt](https://jobsuche.api.bund.dev/) | API for the "Arbeitsamt", which is a german Job board aggregator | `OAuth` | Yes | Unknown |
 | [Careerjet](https://www.careerjet.com/partners/api/) | Job search engine | `apiKey` | No | Unknown |
 | [DevITjobs UK](https://devitjobs.uk/job_feed.xml) | Jobs with GraphQL | No | Yes | Yes |
 | [Findwork](https://findwork.dev/developers/) | Job board | `apiKey` | Yes | Unknown |