generalize helper for loading module from source (#2862)

api/tests/integration_tests/utils/lazy_load_class.py

@@ -0,0 +1,7 @@
+from tests.integration_tests.utils.parent_class import ParentClass
+
+
+class LazyLoadChildClass(ParentClass):
+    def __init__(self, name: str):
+        super().__init__(name)
+        self.name = name