RFR: Touch up gradle build

[Jorn Vernee]

On Wed, 11 Dec 2024 18:26:33 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> I'm setting up the jextract repo on a new machine, and ran into a couple of small build issues that this PR addresses:
> 
> 1.) intellij will try to collect all tasks defined by the gradle build, but this is currently failing if you don't have the jacoco agent configured, since that's needed to 'configure' one of the test tasks. The fix I added is to only lazily register the test task for coverage instead.
> 
> 2.) If you want to debug a jtreg test through Intellij, it's nice to be able to build the test image and native test libraries as a pre-run step. I've added a new task called `testDeps` which does both of these things, and can be easily referenced from a run configuration.

FWIW, I also took a look at the failing github actions. The issue is that both the toolchain JDK 22, and the gradle JDK 17, are no longer available. Bumping the versions is easy enough, but we also need to update the gradle version we use in that case. Will save that for another PR.

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PR Comment: https://git.openjdk.org/jextract/pull/263#issuecomment-2539505574