[FLINK-33364][core] Introduce standard YAML for flink configuration.

[JunRuiLee]

What is the purpose of the change

Introduce standard YAML for flink configuration.

Brief change log

• Use snakeyaml as the standard yaml parser and introduce standard YAML for flink configuration.

Verifying this change

• Update ConfigurationTest, ConfigurationUtilsTest, GlobalConfigurationTest to parameterized tests, which will test both new and legacy configuration approaches separately.
• Add YamlParserUtilsTest to test the standard YAML parser.

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:

• 91e473f Azure: SUCCESS
• 3dab6ee Azure: PENDING

Bot commands

The @flinkbot bot supports the following commands:

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

[JunRuiLee]

@flinkbot run azure

[zhuzhurk]

Nice work! @JunRuiLee
Just some minor comments.

[JunRuiLee]

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

[zhuzhurk]

LGTM.