RFR: 8265754: Move suspend/resume API from HandshakeState [v12]

[Coleen Phillimore]

On Wed, 11 Jun 2025 12:43:15 GMT, Anton Artemov <duke at openjdk.org> wrote:

>> 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: Fixed date in copyright comment.

Marked as reviewed by coleenp (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/25407#pullrequestreview-2916974124