Add native-source package type

[geoand]

This package type is meant to support workflows where the actual native-image is created by a different
container than the one that run that Quarkus build.

Resolves: #15208

[geoand]

@jerboaa @ebaron here is the initial work for #15208.

What it does create the same directory that the native package creates, but doesn't actually run the native-image.
Furthermore, it also writes a file named native-image.args inside that directory which contains all the native-image args (that don't actually depend on the version of the native-image binary).
You can then run the actual native-image run by doing something like:

$GRAALVM_HOME/bin/native-image $(cat native-image.args)

The output directory for the is package type is stable, it's named native-sources and resides under target.

Please try it out with the workflow you have in mind and let me know.

[zakkak]

LGTM, thanks @geoand

When merging please keep in mind that this PR conflicts with #14635 and #13963 .

[geoand]

I can wait for those to be merged if needed

[geoand]

#14635 was merged so I now need to rebase this onto the latest version of the code

[geoand]

PR has been rebased onto master and taken out of draft.

Please take a look :)

Thanks!

[zakkak]

LGTM, thanks @geoand

[geoand]

Thanks for the review @zakkak

[geoand]

@gsmet or @gastaldi mind taking a look at this as well?

Thanks

[gastaldi]

Nice! Loved it!

[stuartwdouglas]

@geoand I missed this yesterday, but won't the native sources build not include the results of native image only build steps? If something is using onlyIf = NativeBuild.class they won't be included but should be?

[geoand]

That's a good question, should they actually be included?

We would probably have to look at each one

[geoand]

I'll go through them one by one and change the ones that need to be changed.

[geoand]

Draft PR is here: #15291

I want it to run on my fork before I request a review