Deploy: Use Quarkus configuration & conf. profiles

[jsenko]

Use Quarkus's configuration system to create a set of profiles for various kind of deployment scenarios, including selection of the persistence layer implementation and logging.

Profiles could be e.g.: dev (h2 DB), single (PostgreSQL) cluster (Infinispan), kafka, ...

Resources:

• https://quarkus.io/guides/application-configuration-guide#configuration-profiles

[EricWittmann]

Where are we on this? @jsenko @alesj

[alesj]

What's the use-case here?
Atm I simply put all config into single application.properties, and impls use what they need.

[jsenko]

I think we can close this after @alesj adds the Kafka info as in PR #80

[alesj]

@jsenko what's missing? I did add dev/prod info into docs ...