[MNG-5577] Use constructor injection and remove the use of @Component

[gnodet]

A few refactoring commits....

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[cstamas]

While this PR overlaps some other things as well (like getting rid of ServiceLocator) I do consider this PR a "good thing". That said, this will 100% conflict with some other PRs (like logging cleanup), so IMO this PR should be merged as soon as possible, then I will update my PRs (logging, Plexus XML, etc)

[cstamas]

@gnodet please make sure you ingest all changes of this #440 as then we have two 🪰 (issues) killed with one 👏 (change) (as they are related: ServiceLocator prevents ctor injection, one cannot go without another).

[gnodet]

@gnodet please make sure you ingest all changes of this #440 as then we have two 🪰 (issues) killed with one 👏 (change) (as they are related: ServiceLocator prevents ctor injection, one cannot go without another).

@cstamas The only real difference (beyond spaces) is that I kept the DefaultArtifactDescriptorReader constructor package protected instead of making it public. Otherwise, all the meaningful changes in #440 are included in the commit.