Flink: Add RowConverter for Iceberg Source

[abharath9]

Feature Request / Improvement

Currently we can't create views on top of IcebergSource DataStreams directly. We need to convert the RowData to Row explicitly using map function. I thought creating a RowConverter to convert RowData to Row and return IcebergSource would be a good idea. This approach enables the use of the Iceberg schema to create a DataStream and further create a view on top of it. What are your thoughts?

Query engine

Flink

Willingness to contribute

• I can contribute this improvement/feature independently
• I would be willing to contribute this improvement/feature with guidance from the Iceberg community
• I cannot contribute this improvement/feature at this time

[abharath9]

Implemented this change and created a pr. Can i get a review on this?
#11301
https://github.com/apache/iceberg/pull/11301