[FLINK-33983][runtime] Introduce JobEvent and JobEventStore

[JunRuiLee]

What is the purpose of the change

[FLINK-33983][runtime] Introduce JobEvent and JobEventStore

Brief change log

Introduce JobEvent and JobEventStore

Verifying this change

This change added tests and can be verified as follows:

• ExecutionJobVertexInitializedEventTest
• ExecutionVertexFinishedEventTest
• ExecutionVertexResetEventTest
• FileSystemJobEventStoreTest
• FsBatchFlushOutputStreamTest
• JobEventManagerTest
• TestingJobEvent

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)

[flinkbot]

CI report:

• 7998f83a181792bff03661f5abd6fd56ff6af7da Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[JunRuiLee]

Thanks @zhuzhurk for review, I've updated this pr accordingly. PTAL.