[GR-43070] Add logging facilities to GraalVM features

[sdeleuze]

While developing a org.graalvm.nativeimage.hosted.Feature for Spring Framework, we would like to be able to log easily with at least the capability to differentiate verbose (when --verbose is used) and regular (by default) modes on the standard output displayed during the build.

org.graalvm.compiler.debug.DebugContext seems not a good fit for that (too low level and related to dumps) so we have to use System.out.println which does not allow to only display logs when --verbose is set.

Please add the spring label to this issue.

[sdeleuze]

This issue was discussed with @christianwimmer.

[fniephaus]

Would something like TruffleLogger for GraalVM Native Image fit your needs?

[sdeleuze]

I think it would.