[Java] Introduce GitHub actions

Context:

We would like to set up some Continuous Integration pipelines using GitHub actions workflow.

Task:

1. Look into GitHub actions article.
2. Try to configure a similar workflow for our project.

Acceptance criteria:

Using GitHub actions, we know how to:

• compile and test our code
• run static code analysis using SonarCloud site
• create and publish an artifact in the GitHub Packages repository
• create and publish a Docker image with an application on the Docker Hub site