feat/30-cgats-interop
- Add CGATSParser, CGATSWriter, and CGATSSummary under ICCeryCore/CGATS. - Parse CTI3, CGATS.17, ISO28178, and CSV; synthesize COLOR_REP/DEVICE_CLASS. - Scale RGB/CMYK device coordinates from 0-255 to 0-100 when needed. - Round-trip parse, write, reparse with tab-delimited canonical .ti3. - Wire `Import Dataset…` in Stage 1 to open-panel import, write .ti3, and jump to Stage 4/5 while keeping Stages 1-2 locked without .ti1/.ti2. - Add CGATSParserTests and Milestone6CGATSUITests.importUsesOpenPanelNotSaveTi1. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>