Add an API helper to link two elements

Closes #277 (closed)

arkindex_worker/worker/element.py

@@ -283,6 +283,35 @@ class ElementMixin:
 
         return created_ids
 
+    def create_element_parent(
+        self,
+        parent: Element,
+        child: Element,
+    ) -> dict[str, str]:
+        """
+        Link an element to a parent through the API.
+
+        :param parent: Parent element.
+        :param child: Child element.
+        :returns: A dict from the ``CreateElementParent`` API endpoint.
+        """
+        assert parent and isinstance(
+            parent, Element
+        ), "parent shouldn't be null and should be of type Element"
+        assert child and isinstance(
+            child, Element
+        ), "child shouldn't be null and should be of type Element"
+
+        if self.is_read_only:
+            logger.warning("Cannot link elements as this worker is in read-only mode")
+            return
+
+        return self.request(
+            "CreateElementParent",
+            parent=parent.id,
+            child=child.id,
+        )
+
     def partial_update_element(
         self, element: Element | CachedElement, **kwargs
     ) -> dict:
@@ -301,7 +330,7 @@ class ElementMixin:
             * *image* (``UUID``): Optional ID of the image of this element
 
 
-        :returns: A dict from the ``PartialUpdateElement`` API endpoint,
+        :returns: A dict from the ``PartialUpdateElement`` API endpoint.
         """
         assert element and isinstance(
             element, Element | CachedElement