[Feature][connector-file] Add PostgreSQL COPY Command Support to JDBC Source for Enhanced Data Extraction Performance

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Description

The current JDBC Source connector cannot use PostgreSQL's native COPY command for data extraction, forcing users to rely on slower standard SELECT queries when reading large datasets. This results in unnecessarily long extraction times and inefficient resource usage during data synchronization from PostgreSQL.

Usage Scenario

Enable high-speed data extraction from PostgreSQL databases in SeaTunnel ETL/ELT jobs.

Related issues

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