feat: Add thumbnail management for albums and people, implement face embedding functionality

libertas_api/src/services/album_service.rs

@@ -170,4 +170,22 @@ impl AlbumService for AlbumServiceImpl {
         let media = self.album_repo.list_media_by_album_id(album_id).await?;
         Ok(PublicAlbumBundle { album, media })
     }
+
+    async fn set_album_thumbnail(
+        &self,
+        album_id: Uuid,
+        media_id: Uuid,
+        user_id: Uuid,
+    ) -> CoreResult<()> {
+        self.auth_service
+            .check_permission(Some(user_id), Permission::EditAlbum(album_id))
+            .await?;
+        self.auth_service
+            .check_permission(Some(user_id), Permission::ViewMedia(media_id))
+            .await?;
+
+        self.album_repo
+            .set_thumbnail_media_id(album_id, media_id)
+            .await
+    }
 }