Add stakeholder requirements to treqs

User Story

As a developer, I want the received stakeholder requirements from the interviews to be put in a new folder in requirements/ so that we can link these requirements to our own to make sure we complete them.

Traceability

• Related to: #
• T-Reqs ID:
• Requirement label: REQ-5.1

Acceptance criteria

• Requirements are created
• TTIM.yaml gets a new type for these