Add actual code to all examples and integrate them to testing pipeline

[bheisen]

Is your feature request related to a problem? Please describe.
Currently, all examples are formulated as markdown documents only. In order to ensure that all examples are always working as described, the actual code should be added to the repository and the example should be installed and tested to best extend as part of the regular test runs.

Describe the solution you'd like
Move the markdowns out of the docs folder into and create a folder for each one under the examples directory. The old markdown should then simply read README.md and a install.sh should be added for generic installation as used during the testing.

[create-issue-branch]

Branch feature/29-add-actual-code-to-all-examples-and-integrate-them-to-testing-pipeline created!