- Fix ci.yml to create test input file before running tests
- Add build-deb.yml for DEB package building on releases
- Add ci-cd.yml for comprehensive CI/CD pipeline
- Add security.yml for code security scanning
- Add release.yml for dedicated release builds
- Add test_parser.cpp with argument parsing tests
- Add test_validator.cpp with configuration validation tests
- Add test_converter.cpp with FFmpeg command building tests
- Update Makefile with test targets for unit tests
- Update CI workflow to run make test
- Add test binaries and media files to .gitignore