Enhance Build Pipeline with Debug and Core Analysis Support

Adds comprehensive debug build support and automated core dump analysis to
the Cloudberry build pipeline. Key features:

- Debug build capability with preserved symbols and debug-specific RPMs
- Automated core dump detection and analysis during test execution
- Core file correlation with test failures
- Enhanced test result reporting with core dump status
- Improved artifact management for debug builds

The changes enable better debugging of test failures and provide more
detailed information about process crashes during testing.