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: #<issue number>
- T-Reqs ID: <T-Reqs ID>
- Requirement label: REQ-5.1
## Acceptance criteria
- [x] Requirements are created
- [x] TTIM.yaml gets a new type for these
issue