Implement the repository for library item entity.

backend/infrastructure/src/video/model.rs

@@ -49,4 +49,13 @@ impl LibraryItemEntity {
             unknown_value => Err(Error::new(ErrorKind::InvalidData, format!("Unknown library item type value from database: {unknown_value}")))
         }
     }
+
+    pub(crate) fn to_library_item(&self) -> Result<LibraryItem, Error> {
+        let library_item = LibraryItem {
+            id: self.id.clone(),
+            name: self.name.clone(),
+            r#type: Self::map_type_from_i8(self.r#type)?
+        };
+        Ok(library_item)
+    }
 }