Release v2.19.0

Things to mention

Available cloud models are now fetched via API call with some basic filtering so that the list of models doesn't get too long.
This makes gemini-3.5-flash available in LrGeniusAI.

What's Changed

• Automatic updates for Gemini and ChatGPT models by @bmachek in #190

Full Changelog: v2.18.0...v2.19.0