Returning Composite index structure and field values for hex string

[ntisseyre]

Enhancements for this API, introduced in the PR
to return not only index structure but also corresponding field values:

getIndexInfo(String hexString)

Purpose: Decodes a hex string to retrieve composite index information.
Parameters:
hexString: A hexadecimal string representing the index key.
Returns:
CompositeIndexType: The composite index details.

[porunov]

Seems the lint failed with unused imports:
‘’’
Error: /home/runner/work/janusgraph/janusgraph/janusgraph-backend-testutils/src/main/java/org/janusgraph/graphdb/JanusGraphIndexTest.java:101:8: Unused import - org.janusgraph.graphdb.types.CompositeIndexType. [UnusedImports]
‘’’

[porunov]

LGTM. Thank you @ntisseyre !