feat: add service to display images from other hostings on chat

[igorovh]

[gemini-code-assist]

Summary of Changes

Hello @igorovh, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the chat's capability to display a wider range of images by integrating support for new hosting platforms like prnt.sc and files.catbox.moe. It achieves this by routing image requests through a CORS proxy, ensuring seamless rendering within the chat interface, and also includes mechanisms to correctly identify and link back to the original image sources.

Highlights

• Expanded Image Hosting Support: The chat now supports displaying images from additional third-party hosting services, specifically prnt.sc and files.catbox.moe.
• CORS Proxy Integration: A CORS proxy service (corsgo.enhancer.at) has been integrated to fetch images from these new hosts, effectively bypassing potential cross-origin restrictions that might prevent them from being displayed directly.
• Original URL Resolution: Logic has been added to correctly resolve and extract the original image URL from the proxied URL, allowing users to navigate to the source content if needed.

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[igorovh]

todo:

• there is some glitch that if image link is in the chat input, we are constantly getting requests, im gonna check on that
• create a/b tests for like 10% of users

[gemini-code-assist]

Code Review

This pull request adds support for displaying images from additional hostings like prnt.sc and files.catbox.moe by using a CORS proxy. The implementation looks good, but I've found a critical issue where the new hosts are not added to the ALLOWED_HOSTS list, which would prevent the feature from working. I've also left a couple of suggestions to improve maintainability and error handling by removing magic strings and empty catch blocks. Please take a look at the detailed comments.

[Copilot]

Pull request overview

This PR adds support for displaying images from additional hosting services (prnt.sc and files.catbox.moe) in chat by routing them through a CORS proxy service (corsgo.enhancer.at). The implementation includes URL transformation for the proxy and a reverse parser to extract original URLs for navigation.

• Added CORSGO_PROXY_URL_PARSER to route specific hosts through the corsgo.enhancer.at proxy
• Configured prnt.sc and files.catbox.moe to use the CORS proxy for image display
• Added preview URL parser to extract original URLs from proxied corsgo.enhancer.at URLs

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