quarkus create app requires platform Maven repositories to be enabled in user settings.xml

[aloubyansky]

Description

When a user creates a new project with quarkus app create, the dev tools will need to resolve the platform descriptors, codestarts and other artifacts from a Maven repository. If that Maven repository is not Central, for that to work, that Maven repository would have to be configured and enabled in the user settings.xml. Once the project is generated, the generated pom.xml typically includes the custom Maven repository configuration (in the case of RHBQ, for example), so the generated project can be built.

The requirement of pre-configuring the Maven repository in the user settings.xml could be relaxed though. Taking RHBQ as an example, its registry descriptor could include the Maven repository URL that could be used to resolve the platform descriptors.
The registry client would use the Maven repository URL to resolve the platform descriptors if that Maven repository has not yet been configured in the user settings.xml.

To demonstrate the issue, create the following configuration file under ~/.quarkus/config.yaml:

debug: true
registries:
  - registry.quarkus.redhat.com
  - registry.quarkus.io

and run (without pre-configuring https://repo.maven.apache.org/maven2 in the settings.xml)

quarkus create app --verbose

Implementation ideas

No response

[quarkus-bot]

/cc @quarkusio/devtools (maven)