allow custom process application name

[jangalinski]

Currently, the deployment uses a hard coded name:

camunda-bpm-spring-boot-deployment/src/main/kotlin/io/holunda/deployment/DeployOnApplicationStart.kt

Line 20 in f52e8cf

const val PROCESS_APPLICATION = "process application"

but it is possible to name the process application via the EnableProcessApplication annotation. We should check if that is the case and then use its name for the deployment.