Add Pollinations.AI API Extension

[voodoohop]

This PR adds a new extension that integrates Pollinations.AI with the Stable Diffusion WebUI.

Features

• Generate images using Pollinations.AI's free, no-signup API directly from the WebUI
• No API key or signup required
• Access to multiple image generation models
• Adjustable parameters (width, height, seed, etc.)
• Option to disable the Pollinations logo overlay

Benefits

• Allows users without high-end GPUs to generate images using cloud-based models
• Provides access to multiple models without downloading them
• Simple integration with existing WebUI workflow
• Free to use with no signup required

Implementation

The extension adds a new script that can be enabled in both txt2img and img2img tabs. When enabled, it bypasses the local generation process and instead sends the prompt to Pollinations.AI's API, then displays the resulting image in the WebUI.

About Pollinations.AI

Pollinations.AI is a 100% open-source platform providing free, no-signup APIs for text, image, and audio generation with no API keys required.

[missionfloyd]

Instead of this PR, make a new repo with the contents of the pollinations-api folder. It can then be installed on the Extensions / Install from URL tab.

You can also submit it here to add it the Extensions / Available tab.