OZG-4561 rename mgm/gitops -> ozgcloud-devops/gitops; mgm/dokumentation -> ozgcloud-doc/dokumentation

```
perl -i -p -e"s/Goofy/Alfa/g" (ack -lI Goofy)
perl -i -p -e"s/goofy/alfa/g" (ack -lI goofy)
perl -i -p -e"s/GOOFY/ALFA/g" (ack -lI GOOFY)

git mv apps/goofy apps/alfa
git mv apps/goofy-e2e apps/alfa-e2e

git checkout apps/alfa-e2e/Jenkinsfile apps/alfa-e2e/Jenkinsfile-static apps/alfa-e2e/docker-compose.yml
```

`perl -i -p -e"s/goofy-client/alfa/g" (ack -l goofy-client)`
`git checkout pom.xml sonar-project.properties`

As well as more information accumulated in the last months.

Improve short description to start the client.