[FLINK-27429] Add Vertica JDBC Dialect

[jredzepovic]

What is the purpose of the change

Add the implementation of the Vertica dialect

Brief change log

Added:
VerticaDialect
VerticaDialectFactory
VerticaRowConverter

Verifying this change

This change added tests and can be verified as follows:

• Added integration tests for end-to-end deployment
• Some cases already covered with tests

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

• Dependencies (does it add or upgrade a dependency): (yes)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? ( no)
• If yes, how is the feature documented? (docs)

[jredzepovic]

@MartijnVisser, I closed the old PR #33 and opened this one. Could you please review?