MCP tool definitions and handlers for image operations backed by the Image library.

Provides 10 tools:

• image_info -- Extract metadata, dimensions, color space, EXIF, and format details
• image_resize -- Resize image by scale factor, width, height, or thumbnail bounding box
• image_crop -- Crop an image by bounding box or auto-trim whitespace/borders
• image_rotate -- Rotate by angle or flip image horizontally/vertically
• image_convert -- Convert image format (PNG, JPEG, WebP, AVIF, TIFF, GIF)
• image_apply_filter -- Apply visual filter (grayscale, blur, sharpen, brightness, contrast, invert, sepia, etc.)
• image_composite -- Overlay an image onto another at coordinates (x, y) with opacity
• image_compare -- Compare two images for difference/similarity and generate visual diff
• image_avatar -- Create a circular, squircle, or square avatar image
• image_draw_text -- Render text overlay onto an image at specified position