RFR: 8314406: Provide a shared doubly LinkedList implementation

[Ivan Walulya]

Hi all,

Please review this refactoring change to move the ZGC ZList to utilities. Mainly code motion with addition of the necessary tests.

Another notable change is allowing the List elements to exist in multiple lists at the same time. 

Testing: 
     - Linux x86_64 fastdebug `gtest:all`.
     - Mach5 GTestWrapper

Thanks!

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Commit messages:
 - Add tests

Changes: https://git.openjdk.org/jdk/pull/15312/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15312&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314406
  Stats: 697 lines in 3 files changed: 697 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15312.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15312/head:pull/15312

PR: https://git.openjdk.org/jdk/pull/15312