RFR: 8294972: Convert jdk.jlink internal plugins to use the Classfile API [v15]

[Adam Sotona]

> jdk.jlink internal plugins are heavily using ASM
> 
> This patch converts ASM calls to Classfile API.
> 
> Please review.
> Thanks,
> Adam

Adam Sotona has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 223 commits:

 - Merge branch 'master' into JDK-8294972-jlink-plugins
   
   # Conflicts:
   #	src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/SystemModulesPlugin.java
 - fixed SystemModulesClassGenerator.moduleInfos comment
 - added default to thrown for unknown CP tag in IncludeLocalesPlugin
 - Merge branch 'master' into JDK-8294972-jlink-plugins
 - SystemModulesPlugin::genClassBytes rename
 - SystemModulesPlugin::getClassBytes rename
 - Revert "implementation of custom ResourceHelper in IncludeLocalesPlugin"
 - remaining cleanup in SystemModulesPlugin
 - implementation of custom ResourceHelper in IncludeLocalesPlugin
 - fixed SystemModulesPlugin
 - ... and 213 more: https://git.openjdk.org/jdk/compare/c4df9b5f...71ed9a43

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Changes: https://git.openjdk.org/jdk/pull/12944/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12944&range=14
  Stats: 1035 lines in 6 files changed: 217 ins; 278 del; 540 mod
  Patch: https://git.openjdk.org/jdk/pull/12944.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/12944/head:pull/12944

PR: https://git.openjdk.org/jdk/pull/12944