Add paper link and library name to dataset card

This PR updates the dataset card for `BackHome19K` by adding a direct link to its associated paper, [Back Home: A Computer Vision Solution to Seashell Identification for Ecological Restoration](https://huggingface.co/papers/2501.04873), at the top of the content.

Additionally, it includes `library_name: datasets` in the metadata, as the dataset's sample usage demonstrates its primary integration with the Hugging Face `datasets` library, improving discoverability and clarity for users.

README.md

@@ -1,7 +1,10 @@
 ---
 license: mit
+size_categories:
+- 10K<n<100K
 task_categories:
 - image-classification
+pretty_name: BackHome19K
 tags:
 - seashells
 - marine-biology
@@ -10,13 +13,13 @@ tags:
 - caribbean
 - image-dataset
 - mollusks
-pretty_name: BackHome19K
-size_categories:
-- 10K<n<100K
+library_name: datasets
 ---
 
 # BackHome19K
 
+[Paper](https://huggingface.co/papers/2501.04873)
+
 ## Dataset Description
 
 BackHome19K is the first comprehensive seashell image dataset specifically created for ecosystem-level classification—distinguishing between shells from the Pacific and Caribbean coasts—rather than traditional taxonomic identification.