Upgrade Native Image Containerization workshop (what-the-dickens) to GraalVM for JDK 24.

[olyagpl]

1. Upgraded what-the-dickens Native Image workshop to GraalVM for JDK 24 and latest Native Build Tools.
2. Added the missing GitHub workflow that run steps to testing all Docker builds.
3. Dockerfiles required updates.

There is no Luna Labs version of this workshop.

[olyagpl]

I changed the artifactId for lowercase. 
Otherwise, Paketo Buildpacks build fails with:

[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:3.0.5:build-image (default-cli) on project What_the_Dickens: Execution default-cli of goal org.springframework.boot:spring-boot-maven-plugin:3.0.5:build-image failed: Unable to parse name "What_the_Dickens". Image name must be in the form '[domainHost:port/][path/]name', with 'path' and 'name' containing only [a-z0-9][.][_][-] -> [Help 1]

[olyagpl]

I added a separate profile to test this Docker build with a GitHub workflow pipeline. No changes were required to the text in README. I only updated the Maven build command in native-image/what-the-dickens/lab/02-smaller-containers/Dockerfile to RUN ./mvnw --no-transfer-progress -Pnative,mostly-static -DskipTests=true clean package.

[olyagpl]

This step doesn't work (and it isn't being tested with GitHub workflow).
Since the intialization strategy evolved in Native Image since JDK 17, --initialize-at-build-time=com.example.DickensController,rita.RiMarkov,rita.Util,rita.Tokenizer,rita.RiTa causes the build to fail. I need to spend more time on this step. Or we just remove it all together and don't promote class initialization options.