Rename the container apps

[agoncal]

When you look at the best naming practices, it is recommended to prefix a container app with ctap. So we should rename our apps:

QUARKUS_APP="ctap-quarkus"
MICRONAUT_APP="ctap-micronaut"
SPRING_APP="ctap-springboot"

Instead of

QUARKUS_APP="quarkus-app"
MICRONAUT_APP="micronaut-app"
SPRING_APP="springboot-app"

We should check the Azure Naming Tool.

[sinedied]

I'm deferring this one as it would need redoing a lot of the screenshots!