Support Mage-Flow (including Turbo & Edit) models

[AllenGLHuang-cl]

Project page https://microsoft.github.io/Mage/flow/

Quoted from https://www.reddit.com/r/LocalLLaMA/s/XvIpvGuZ1Y

Mage-Flow is a compact 4B-scale generative stack for efficient text-to-image generation and instruction-based image editing. Instead of scaling to tens of billions of parameters, Mage-Flow reaches state-of-the-art-competitive quality through careful tokenizer-backbone-system co-design, so it stays fast, memory-light, and easy to fine-tune under realistic compute budgets.