Build the fist content for KI hub: KI Læring

### Description

As a user, I want to read about what is AI and definitions, and how it relates to Digdir. 

### Additional Information

Target: https://kihub-web.happypond-fe66d7a5.norwayeast.azurecontainerapps.io/laering



### Tasks

See what we have in Confluence. 
update the concepts and make sure it covers recent definitions. 

### Acceptance Criterias

The text is shown in KI hub