move assets into separate repo

[monok-robeto]

Managing repository size

Currently, we are storing preview images and benchmark screenshots directly within the main repository. This approach has a significant drawback: as we add more versions and assets, the repository size will grow rapidly.

To keep the repository lean:

• Move assets: Create a separate public repository specifically for storing these images.
• Link externally: Reference the images in our main documentation or posts using their public URLs instead of local file paths.

This will help keep our primary codebase lightweight and easier to manage.