Fix Image Edit (#33)

* feat: Implement custom image analysis endpoint and update settings UI

* feat: Enhance video generation to support image inputs alongside text prompts

* feat: Add unified video generation endpoint with optional image uploads and analysis support

* fix: Remove default true value for debug mode in API configuration

* feat: Implement image-to-video mode with enforced variant limitation and UI updates

* feat: Add unified endpoint for image generation, analysis, and saving

* feat: Add Azure Cosmos DB setup instructions and resolution options in GenerateForm

* feat: Implement unified image pipeline for generation, editing, and saving with analysis support

Author: alisoliman