3.x: Inject prebuilt module-info.class for Module support

[akarnokd]

If I understand correctly, all we need is a compiled module-info.class in the META-INF/versions/9 directory.

So instead of doing compiler tricks, I took #7332, generated the jar, extracted the module-info.class, then put the class file into the resources directory as is.

Also the bnd plugin needed to suppress the misplaces class file error.

Replaces #7332
Replaces #7241
Resolves #7240

[codecov]

Codecov Report

Merging #7333 (d9cf03c) into 3.x (ce45fc2) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                3.x    #7333      +/-   ##
============================================
- Coverage     99.55%   99.51%   -0.05%     
- Complexity     6781     6782       +1     
============================================
  Files           751      751              
  Lines         47482    47482              
  Branches       6378     6378              
============================================
- Hits          47271    47252      -19     
- Misses           94      106      +12     
- Partials        117      124       +7     

Impacted Files	Coverage Δ
...eactivex/rxjava3/processors/BehaviorProcessor.java	97.48% <0.00%> (-2.52%)	⬇️
...ernal/operators/flowable/FlowableFlatMapMaybe.java	95.33% <0.00%> (-2.08%)	⬇️
...nternal/operators/parallel/ParallelReduceFull.java	91.08% <0.00%> (-1.99%)	⬇️
...tivex/rxjava3/internal/jdk8/ParallelCollector.java	96.33% <0.00%> (-1.84%)	⬇️
...va3/internal/operators/parallel/ParallelRunOn.java	98.53% <0.00%> (-1.47%)	⬇️
...internal/operators/flowable/FlowableSwitchMap.java	98.58% <0.00%> (-1.42%)	⬇️
...l/operators/observable/ObservableFlatMapMaybe.java	93.66% <0.00%> (-1.41%)	⬇️
...rnal/operators/flowable/FlowableFlatMapSingle.java	94.76% <0.00%> (-1.17%)	⬇️
...operators/flowable/FlowableConcatMapScheduler.java	99.20% <0.00%> (-0.40%)	⬇️
...a3/internal/operators/flowable/FlowableReplay.java	98.71% <0.00%> (-0.22%)	⬇️
... and 7 more

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[akarnokd]

Closing in favor of #7241