chore: Prepare `tinybreaker_grid.jpg` for inclusion in README.md

This commit adds the `tinybreaker_grid.jpg` file to the project's repository. This image, which contains a grid of examples generated by the TinyBreaker model, is intended for future integration into the main `README.md` to visually demonstrate the types of images the model can produce.

.gitattributes

@@ -33,3 +33,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+tinybreaker_grid.jpg filter=lfs diff=lfs merge=lfs -text