Support building in native-sources package type

[ebaron]

We should add a profile to support building in native-sources mode to better support our downstream builds:
https://quarkus.io/guides/building-native-image#separating-java-and-native-image-compilation

[andrewazores]

Blocked on #4 ?

[ebaron]

Ah right, I forgot about this. JVM mode it is for now then