Demo PRs

design docs: #7442
ai image contribute docs: https://lobehub.com/zh/docs/development/basic/add-new-image-model

• add OpenAI Compatible Image model:
  • ✨ feat: add zhipu cogview4 #8486
  • 💄 style: support more Text2Image from Qwen #8574
• add OpenAI-incompatible AI image model:
  • ✨ feat: add image generation support for google provider #8503
  • ✨ feat: add Qwen image generation capabilities #8534
  • 💄 style: support more Text2Image from Qwen #8574
  • 💄 style: support Minimax T2I models #8583
  • 💄 style: add Imagen 4 GA models #8799
  • ✨ feat(models): Add Qwen Image Edit model #8851
• add new image provider:
  • ✨ feat(provider): add BFL provider support for image generation #8806