Support Customized JUnit5 TestEngine that reads test-scenarios from .json files

Referenced from @emyklebost:

Hello. I've created a custom JUnit5 TestEngine that reads test-scenarios from .json files. I would like to run these tests in vscode using the junit-platform-console-standalone.jar without a build tool. I am able to do this manually using PowerShell, e.g.: java -jar junit-standalone.jar -cp engine.jar -f test/my.test.json

I've added the Extension Pack for Java and the following in settings.json:

{
    "java.project.referencedLibraries": [
        "engine.jar",
        "junit-standalone.jar"
    ],
}

No tests are discovered in the Testing side-bar and nothing happens when clicking Run Tests. Any suggestions?

I've created a branch with my vscode setup and some screenshots as examples: https://github.com/emyklebost/fhir-tdp/tree/vscode-integration

Comienza revisando la rama vinculada vscode-integration y reproduciendo la configuración de settings.json con engine.jar, junit-standalone.jar y test/my.test.json. Compara el comando manual de la consola de PowerShell con la detección de pruebas y Ejecutar pruebas en la barra lateral Testing; se considera terminado cuando se detecta el JUnit5 TestEngine personalizado y sus escenarios JSON pueden ejecutarse en VS Code sin una herramienta de compilación.