Updated SQL queries in Workabledxcc controller and model to use case-insensitive matching for DXCC country names by comparing UPPER(COL_COUNTRY) to UPPER(?). This resolves issues where country names with different cases were not matched correctly.
Updated batchWorkedQuery and related logic to perform case-insensitive matching for DXCC entities using UPPER() in SQL WHERE conditions. This ensures entities are matched regardless of case, improving reliability of lookups.
Refactored Workabledxcc controller and model to batch DXCC entity and worked/confirmed status lookups for improved performance. Added migration to create composite indexes on DXCC-related columns to further speed up queries. Updated migration version to 205.
