Add support for image generation and vision models #22
Description
The library should support image-related AI capabilities including generation and analysis.
Proposed Changes
- Add support for OpenAI's DALL-E image generation
- Implement multimodal input support for vision models
- Create appropriate DTOs for image inputs and outputs
- Add examples of image generation and analysis usage
Benefits
- Enables image generation capabilities
- Allows for image analysis with vision models
- Creates a more complete AI client library