Data ingestion from Flink to Druid

[Shekharrajak]

Motivation

We observe various applications utilizing the architecture of Flink -> Kafka -> Druid. However, in many cases, I believe that the Kafka hop may not be necessary. If a Flink connector for Druid were available, it would streamline the integration and make utilizing Druid much more straightforward

Proposed changes

Open for discussion on implementation and code changes.