[ARCTIC-108][Flink] Support projection push down to arctic source reader

[SteNicholas]

Fix #108.

ArcticDynamicSource should implement the SupportsProjectionPushDown interface to accelerate data querying.

The brief change log

• ArcticDynamicSource and KafkaDynamicSource implement the SupportsProjectionPushDown interface to support supportsNestedProjection and applyProjection methods.

[YesOrNo828]

@SteNicholas Thanks for your work. LogDataJsonDeserialization will deserialize the byte[] data to RowData by Iceberg's Schema. You can find related code here. I think we should also change the schema when the projection is pushed down. What do you think?

[SteNicholas]

@YesOrNo828, thanks for your suggestion. I have addressed the above comments and updated the schema in LogDynamicSource for deserialization. PTAL.