Test example Application with GraalVM

[tobiasschaefer]

We should verify that an example application also works with GraalVM. At best, this is also build by the CI (but may in parallel due to long build duration).

[Hayvon]

An outdated test application with micronaut-camunda-bpm and GraalVM (20.2.0) can be found here: https://github.com/Hayvon/micronaut-camunda-bpm/tree/workingBranchNativeImage_v2.

Done:

• Provided necessary GraalVM configuration, so application starts

Problems:

• using micronaut-camunda-bpm version 0.0.1-SNAPSHOT
• Autodetection and deployment of BPMN diagrams not working --> Workaround where you need to list all used diagrams in a file ist implemented (see: https://github.com/Hayvon/micronaut-camunda-bpm/blob/workingBranchNativeImage_v2/micronaut-camunda-bpm-example/native-image-readme.md)
• Configuration and DataSourceConfiguration were changed (from Interace to Class) so Issue #22 is bypassed
• No noticeable startup time improvements