Restructure rules_java

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Restructure rules_java

Design doc: https://docs.google.com/document/d/1L1JFgjpZ7SrBinb24DC_5nTIELeYDacikcme-YcA7xs/edit

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PiperOrigin-RevId: 605273963
Change-Id: Icca750162ebede5ad06e4f417fc2c5cb590617c5
20 files changed