RFR: 8265754: Move suspend/resume API from HandshakeState [v11]

[Anton Artemov]

> Hi,
> 
> in this PR the suspend/resume methods are moved away from the HandshakeState class into a new separate class SuspendResumeManager. The idea is that the state class should be a state keeper and should not be responsible for actions which change the state. Such actions should be done by a separate class. 
> 
> Tested in tiers 1-4.

Anton Artemov has updated the pull request incrementally with one additional commit since the last revision:

  8265754: Addressed reviewers comments.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25407/files
  - new: https://git.openjdk.org/jdk/pull/25407/files/8d24cd75..1d34f5ad

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25407&range=10
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25407&range=09-10

  Stats: 9 lines in 2 files changed: 3 ins; 6 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25407.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25407/head:pull/25407

PR: https://git.openjdk.org/jdk/pull/25407