Refactor case studies to its own repo

[KjetilIN]

What?

• [x] Create a new repo for case studies
• [x] Move code over to the case study repo
• [x] Delete old code from the opencv server (PR)
• [x] Verify that the workflows work as intended in the new repo
• [x] Rewrite readme for opencv server
• [x] Rewrtite readme for case study

[KjetilIN]

See PR #55, for removing old code from the opencv server

[KjetilIN]

Done. New repo created