Sweep: Create LanceDB index after table is created in import

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Description

This pull request introduces enhancements to the LanceDB import process by automatically creating an index on the id column after a table is created. This feature aims to improve query performance on the imported tables by leveraging the indexing capabilities of LanceDB.

Summary

• Added import for create_index from the lancedb module to support index creation.
• Introduced a new class variable ID_COLUMN set to "id", which specifies the default column to index.
• Implemented logic to detect the id column in the parquet file schema during the import process. If the id column is found, an index is created on this column for the newly created table.
• Added informative logging to indicate the status of index creation, including a warning message if the id column is not found in the parquet schema, in which case the index creation is skipped for the table.

Modified Files

• src/vdf_io/import_vdf/lancedb_import.py: Main changes include the addition of index creation logic after table creation, import statement for create_index, and the ID_COLUMN class variable definition.

This enhancement ensures that every table imported into LanceDB has an index on its id column (when present), significantly improving the efficiency of operations that rely on this column.

Fixes #80.

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Rollback Files For Sweep

• [ ] Rollback changes to src/vdf_io/import_vdf/lancedb_import.py

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• [ ] Apply: All new business logic should have corresponding unit tests.
• [ ] Apply: Refactor large functions to be more modular.
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