feat(z-image): add Seed Variance Enhancer node and Linear UI integration#8753

Pfannkuchensack merged 10 commits intoinvoke-ai:maininvoke-ai/InvokeAI:mainfrom

Pfannkuchensack:feature/z-image-seed-variance-enhancerPfannkuchensack/InvokeAI:feature/z-image-seed-variance-enhancerCopy head branch name to clipboard