Added device type interface startup script and sample YAML initializer

Renumber startup scripts to place platform initialization before the devices to enable platform specification during device creation

startup_scripts/330_vlan_groups.py

@@ -0,0 +1,40 @@
+import sys
+
+from django.contrib.contenttypes.models import ContentType
+from ipam.models import VLANGroup
+from startup_script_utils import load_yaml, pop_custom_fields, set_custom_fields_values
+
+vlan_groups = load_yaml("/opt/netbox/initializers/vlan_groups.yml")
+
+if vlan_groups is None:
+    sys.exit()
+
+optional_assocs = {"scope": (None, "name")}
+
+for params in vlan_groups:
+    custom_field_data = pop_custom_fields(params)
+
+    for assoc, details in optional_assocs.items():
+        if assoc in params:
+            model, field = details
+            query = {field: params.pop(assoc)}
+            # Get model from Contenttype
+            scope_type = params.pop("scope_type", None)
+            if not scope_type:
+                print(f"VLAN Group '{params['name']}': scope_type is missing from VLAN Group")
+                continue
+            app_label, model = str(scope_type).split(".")
+            ct = ContentType.objects.filter(app_label=app_label, model=model).first()
+            if not ct:
+                print(
+                    f"VLAN Group '{params['name']}': ContentType for "
+                    + f"app_label = '{app_label}' and model = '{model}' not found"
+                )
+                continue
+            params["scope_id"] = ct.model_class().objects.get(**query).id
+    vlan_group, created = VLANGroup.objects.get_or_create(**params)
+
+    if created:
+        set_custom_fields_values(vlan_group, custom_field_data)
+
+        print("🏘️ Created VLAN Group", vlan_group.name)