Add a reference document explaining business values and rationales behind the governance criteria

[janhalen]

Add a reference document

To understand the rationale behind each governance criteria, a reference doc with high level explanations would make the governance template more approachable for a larger part of the community

• Add danish translation #21
• Make it possible to reference between criterias and business values

[janhalen]

Work done here: https://github.com/OS2offdig/governance_report_template/tree/11-add-a-reference-document-explaining-business-values-and-rationales-behind-the-governance-criteria/docs