Add setup for getting started guide

[fmisir]

This PR introduces a docker-compose file based on pre build images.
The images are built currently by me locally:

EDC images are based on EDC milestone-3.1.
API Wrapper / Proxy / Backend Service is based on the "merge-aas-setup" branch.
Digital Twin Registry is the latest version from the INT environment.

As @florianrusch-zf suggested, i pushed the images to ghcr.io/catenax-ng/catenax-at-home/* they are publicly available.

I had build issues because the gradle-wrapper.jar were not available, I added them as well.

Please don't merge this yet, as it's still work in progress.

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⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

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🔎 Detected hardcoded secret in your pull request

GitGuardian id	Secret	Commit	Filename
-	Generic Private Key	f89169c	getting-started-guide/certs/key.pem	View secret

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[florianrusch-zf]

[...] I had build issues because the gradle-wrapper.jar were not available, I added them as well.

if you use the gradlew.sh|.bat file it should download the jar file...or I'm wrong?

[fmisir]

[...] I had build issues because the gradle-wrapper.jar were not available, I added them as well.

if you use the gradlew.sh|.bat file it should download the jar file...or I'm wrong?

The gradle-wrapper.jar is used by the gradlew.sh to download gradle. So it's required to be there.

[florianrusch-zf]

The gradle-wrapper.jar is used by the gradlew.sh to download gradle. So it's required to be there.

Ahhh shit, okay...again learned something! Thanks!

[florianrusch-zf]

@fmisir can you then also add the maven-wrapper.jar files? I also suggest a change of the .gitignore