Configure Maven to package the client app with Quarkus backend

[danielpetisme]

Is your feature request related to a problem? Please describe.
As for now, the frontend application is generated in src/main/resources/webapp but not take into account by Quarkus.

Describe the solution you'd like
Update the maven pom.xml to trigger the client app building (with prod profile) when running mvn package.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.