refact: replace edge_kwrds with metadata in models

tests/dataplatform/test_dataplateform.py

@@ -156,13 +156,13 @@ def test_content_from_graphset(dataplatform: DataPlateform):
             arrow="foo_flux",
             sources=[Node(name="test-raw-username"), Node(name="test-raw-recovery")],
             targets=[Node(name="test-bronze-foo")],
-            edge_kwrds={},
+            metadata={},
         ),
         EdgeOnSet(
             arrow="copy_flux",
             sources=[Node(name="test-raw-username")],
             targets=[Node(name="test-bronze-username")],
-            edge_kwrds={},
+            metadata={},
         ),
     ]
 
@@ -181,19 +181,19 @@ def test_content_from_graph(dataplatform: DataPlateform):
             arrow="foo_flux",
             source=Node(name="test-raw-username"),
             target=Node(name="test-bronze-foo"),
-            edge_kwrds={},
+            metadata={},
         ),
         Edge(
             arrow="foo_flux",
             source=Node(name="test-raw-recovery"),
             target=Node(name="test-bronze-foo"),
-            edge_kwrds={},
+            metadata={},
         ),
         Edge(
             arrow="copy_flux",
             source=Node(name="test-raw-username"),
             target=Node(name="test-bronze-username"),
-            edge_kwrds={},
+            metadata={},
         ),
     ]