Improve OG Image generation for posts on bluesky

[iamrajiv]

Describe the Feature

Currently, the Open Graph (OG) image for posts on Bluesky defaults to the Bluesky logo. It would be more beneficial if the OG image could be dynamically generated based on the content of the post. Here are the proposed improvements:

1. Avatar as OG Image: If there is no image attached to the post, use the avatar of the person who created the post as the OG image.
2. Attached Image as OG Image: If there is an image attached to the post, use that image as the OG image.

Additional Context

This enhancement would improve the visual appeal and relevance of shared links on social media platforms.