test(tables): Add reusable StandardTableTestCase

Introduce `TableTestCases.StandardTableTestCase`, a shared base class
for model-backed table smoke tests. It currently discovers sortable
columns from list-view querysets and verifies that each renders without
exceptions in both ascending and descending order.

Add per-table smoke tests across circuits, core, dcim, extras, ipam,
tenancy, users, virtualization, vpn, and wireless apps.

Fixes #21766

netbox/virtualization/tests/test_tables.py

@@ -0,0 +1,26 @@
+from utilities.testing import TableTestCases
+from virtualization.tables import *
+
+
+class ClusterTypeTableTest(TableTestCases.StandardTableTestCase):
+    table = ClusterTypeTable
+
+
+class ClusterGroupTableTest(TableTestCases.StandardTableTestCase):
+    table = ClusterGroupTable
+
+
+class ClusterTableTest(TableTestCases.StandardTableTestCase):
+    table = ClusterTable
+
+
+class VirtualMachineTableTest(TableTestCases.StandardTableTestCase):
+    table = VirtualMachineTable
+
+
+class VMInterfaceTableTest(TableTestCases.StandardTableTestCase):
+    table = VMInterfaceTable
+
+
+class VirtualDiskTableTest(TableTestCases.StandardTableTestCase):
+    table = VirtualDiskTable