[FLINK-33390][runtime] Support slot balancing at TM level for Adaptive Scheduler

[RocMarshal]

What is the purpose of the change

[FLINK-33390][runtime] Support slot balancing at TM level for Adaptive Scheduler

• Introduce SlotsBalancedRequestSlotMatchingStrategy for the slots balancing.
• introduce SimpleRequestSlotMatchingStrategy for the raw feature.

Verifying this change

This change is already covered by existing tests, such as (please describe tests).

• AbstractRequestSlotMatchingStrategyTest

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes / no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes / no)
• The serializers: (yes / no / don't know)
• The runtime per-record code paths (performance sensitive): (yes / no / don't know)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / no / don't know)
• The S3 file system connector: (yes / no / don't know)

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

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CI report:

• e616434879ef2304c61c461e94d03181cf96c342 Azure: SUCCESS

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