v1.6190.1660 — Vortops settings + suite core

Added

• Vortops Settings postbox: API key field, Test Connection, and capability-aware messaging. BMP conversion works locally everywhere, so Vortops is shown as optional with that context. A connected Vortops key is automatically shared with HEIC Support and WEBP Support.

Changed

• Suite core refactor: centralized class-timu-suite-core.php replaces the per-plugin Vortops client copy.