Trying to implement #1380: remove use of Moditect plug-in for 3.0

[cowtowncoder]

For #1380

[cowtowncoder]

@GedMarc Ok, I managed to put this together so that it finally builds & tests run. But for some reason, module-info.class is not included it seems.

I was hoping you could sanity check whether changes make sense (plus if you have an idea of where module-info disappears, that'd be nice bonus too :) )

[cowtowncoder]

FUDGE. It is all thanks to %)@$(#)^$#^# maven-shade-plugin which ALWAYS drops module-info.class: first if "minimize" is enabled and then, well, drop it anyway no matter what.
Apparently no way to configure it to be retained.

Will see if there's a way to RE-ADD it tho.

[cowtowncoder]

Ok and the blocker is this issue:

https://issues.apache.org/jira/browse/MSHADE-261

Because Maven shade plug-in will drop module-info.class (starting with 3.1.0) if:

1. "minimize" is used, OR
2. ... just for funsies even if not (there's second check)

[cowtowncoder]

Ok this has been tough one, but at this point build fully works, ending up with module-info.class under JDK 17 folder (META-INF/versions/17/module-info.class). To make that happen:

1. Build uses src/main/java/module-info.java as it should
2. Tests use src/main/java/module-info.java as they should
3. Jar plugin is instructed to drop /module-info.class because...
4. we need Moditect to re-build and stash module-info.java as META-INF/versions/17/module-info.class (and it won't if there is already module-info.class hence previous removal)
5. maven-shade-plugin cannot forcibly remove module-info.class (it does from main level but NOT from jvm-specific ones. There!)

which is pretty convoluted way to make it. But I could not figure a simpler way... :-(
Still, seems fine.

Also had to simplify FastDoubleParser shading; use of names did not work for some reason.

Next to tackle FasterXML/jackson-databind#4891 (will try to get that working before merging this in).

[cowtowncoder]

@GedMarc @pjfanning @JooHyukKim Just FYI: getting things properly JPMS modularized is pretty challenging. But after jackson-core and jackson-databind, hopefully bit more straight-forward (will see if shading should be removed from Afterburner/Blackbird/MrBean tho)