Added an initial description of the CI-Pipeline
What does this MR do and why?
- Page: testing
Introduced the currently implemented CI-test stages and jobs, implemented in a demo repository for the aircraft design repository. For each test level and each stage the needs, build instructions and test execution steps are described.
Probably this explanation is to detailed for this page and should be moved elsewhere.
How to set up and validate locally
No special instructions necessary. To examine the CI-pipeline, allowed users can visit the following repository: https://git.rwth-aachen.de/maurice.zimmnau/demo_testAD on branch feature_testautomation-patch-cd4b