✨ Add the order_by field to the FromGroupSubmissionController

Allow the user to order the submission via providing `order_by` during
instantiation. This field is directly passed to the `order_by` method of the
`QueryBuilder` used to get all extras which have to be run.

aiida_submission_controller/from_group.py

@@ -18,6 +18,9 @@ class FromGroupSubmissionController(BaseSubmissionController):  # pylint: disabl
     parent_group_label: str
     """Label of the parent group from which to construct the process inputs."""
     filters: Optional[dict] = None
+    """Filters applied to the query of the nodes in the parent group."""
+    order_by: Optional[dict] = None
+    """Ordering applied to the query of the nodes in the parent group."""
 
     _validate_group_exists = validator("parent_group_label", allow_reuse=True)(validate_group_exists)
 
@@ -63,6 +66,10 @@ def get_all_extras_to_submit(self):
             tag="process",
             with_group="group",
         )
+
+        if self.order_by is not None:
+            qbuild.order_by(self.order_by)
+
         results = qbuild.all()
 
         # I return a set of results as required by the API