Describe the security incident management capability

https://pedia.altinn.cloud/sec/security-architecture/security-operations/incident-mgmt/ (or pages referred to from this page) should be updated with information on the security incident management process, the interface and responsibility split between the SOC and the platform and product teams etc.

Once approved, relevant parts should be migrated from pedia to docs.

Start with the linked Pedia incident-management page and the pages it refers to. Document the security incident management process, including the responsibility split and interface between the SOC and platform and product teams; after approval, migrate the relevant sections from Pedia to the docs.

Written by the indexing model from the issue text.