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

initializers/device_type_interfaces.yml

@@ -0,0 +1,18 @@
+# - device_type: Other
+#   name: GigabitEthernet1
+#   type: 10gbase-t
+#   mgmt_only: true
+#   description: Management interface
+#
+# - device_type: Other
+#   name: GigabitEthernet2
+#   type: 10gbase-t
+#   mgmt_only: false
+#   description: Data interface
+#
+# - device_type: Other
+#   name: GigabitEthernet3
+#   type: 1000base-t
+#   description: GigE data interface
+---
+

startup_scripts/210_device_type_interfaces.py

@@ -0,0 +1,27 @@
+import sys
+
+from dcim.models import DeviceType, InterfaceTemplate
+from startup_script_utils import load_yaml, pop_custom_fields, set_custom_fields_values
+
+interfaces = load_yaml("/opt/netbox/initializers/device_type_interfaces.yml")
+
+if interfaces is None:
+    sys.exit()
+
+required_assocs = {"device_type": (DeviceType, "model")}
+
+for params in interfaces:
+    custom_field_data = pop_custom_fields(params)
+
+    for assoc, details in required_assocs.items():
+        model, field = details
+        query = {field: params.pop(assoc)}
+
+        params[assoc] = model.objects.get(**query)
+
+    interface, created = InterfaceTemplate.objects.get_or_create(**params)
+
+    if created:
+        set_custom_fields_values(interface, custom_field_data)
+
+        print("🧷 Created interface template", interface.device_type, interface.name)