Add vision sidecar

[GreifMax]

Plugin: Vision Sidecar

1. Changes vision_load to accept paths given as string.
2. Allows to configure a dedicated Vision Model for non vision-capable Main Models (like GLM/DeepSeek). When set up, the Main Model will call vision_load with a query (like: "verify that the two top right buttons are horizontally aligned") and the Vision Model will respond with specific information about the image.

• GitHub: https://github.com/GreifMax/a0-vision-sidecar
• Tags: tools, vision, llm