Include builds of the remaining example projects

[alexander-yevsyukov]

Even though, all the example projects are added as Git sub-modules to this project, only Hello World example is added to the Gradle composite build which builds the code from _code/samples and _code/examples directories.

The reason for this is that the arrangement of the Gradle composite build requires presence of the top-level buildAll task in the included projects.

For more information on this arrangement please see:

• The buildAll task in build.gradle.kts
• https://discuss.gradle.org/t/defining-a-composite-build-only-to-build-all-subprojects/25070/6
• https://github.com/AlexMAS/gradle-composite-build-example

In order to add an example project to the composite build, it must have the buildAll task implemented this way:

task buildAll(type: GradleBuild) {
    tasks = ['build']
}

The first candidate for the inclusion is the Airport example because its code already used in the guide on 3rd party integration.

[alexander-yevsyukov]

@oleksandra-kovalenko could you arrange adding the Airport example to the project and handle the source code embeddings?