Handle Delta StructType, ArrayType and MapType

[abhishekrb19]

Fixes #16782.

Changes:

• Handle the following Delta complex types:
  a. StructType as JSON
  b. ArrayType as Java list
  c. MapType as Java map

• Generate and add a new Delta table complex-types-table that contains the above complex types for testing.

• Update the tests to include a parameterized test with complex-types-table, with the expectations defined in ComplexTypesDeltaTable.java.

Screenshot with with Delta table containing complex types:

Release note

Fixes #16782 by adding support for Delta structs, arrays and maps in the delta input source.

This PR has:

• been self-reviewed.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• been tested in a test Druid cluster.