feat: add MuAPI image and video generation tool

[Anil-matcha]

MuAPI Image & Video Generator Tool

Adds a Tools function for muapi.ai — a unified API for 400+ generative media models.

What it does

• generate_image(prompt, model?, width?, height?) — generates images using Flux, Midjourney, GPT-4o Image, Imagen 4, Seedream, and more
• generate_video(prompt, model?, duration?, aspect_ratio?) — generates videos using Veo3, Kling, Wan, Runway, Pixverse, Sora, and more

Setup

1. Get an API key at muapi.ai/dashboard/api-keys
2. Admin → Tools → paste the code → set MUAPI_API_KEY in Valves

Example usage in chat

"Generate a photorealistic image of a mountain lake at sunrise using midjourney"

"Create a 5 second video of a timelapse of clouds moving over city using veo3-fast"