feat: added MetadataJdkInstaller

[quintesse]

No description provided.

[quintesse]

@maxandersen I created this Java Metadata based installer and it works perfectly. There's only one thing that we might want to consider: the metadata API separates the lists for GA and EA and for Temurin and AOJ. To be as similar as the Foojay installer it actually does 4 requests, to get GA and EA versions for Temurin and GA and EA versions for AOJ. We should think if we can make this more efficient.

The first thing I just realize is that EA versions for AOJ doesn't make much sense, so that would at least reduce things to 3 requests.

[maxandersen]

Is the intent this will be default or a fallback? How about the initial boothup?

[quintesse]

Is the intent this will be default or a fallback?

Don't know yet. In this PR I made it the default, but that's just the devkitman default which JBang overrides anyway, so the default isn't actually used there.

Making it the default in JBang would mean a change in JBang. But I'm not sure. On the one hand we have a more reliable service with Metadata, but on the other hand we have a more extensive catalog with Foojay which includes EAs that are very useful.

How about the initial boothup?

Yes, I hadn't actually thought about that yet, but that's definitely something not handled by devkitman. That should be an issue in the JBang repo.

But to at least answer the question here: yes that would be a problem because the Metadata API doesn't allow filtering, or getting only a single URL result.

Opened an issue for that: jbangdev/jbang#2377