Feature: Add customisable icons in topology (#193)

* [up] add config for custom images, better js

* [up] use bundler to bundle js

* [fix] remove domcontentloaded since defer is used

* [fix] formatting with black

* [fix] images drf api

* [up] add support for custom icons on additional roles: power panel, power feed, circuit

* [up] optimize topology generation by using `_id` when trying to access pk of related object

* [fix] kebab case instead of slugification

* [fix] use empty queryset in api views & change coord save logic

netbox_topology_views/__init__.py

@@ -1,22 +1,35 @@
 from extras.plugins import PluginConfig
 
+
 class TopologyViewsConfig(PluginConfig):
-    name = 'netbox_topology_views'
-    verbose_name = 'Topology views'
-    description = 'An plugin to render topology maps'
-    version = '3.0.1'
-    author = 'Mattijs Vanhaverbeke'
-    author_email = 'author@example.com'
-    base_url = 'netbox_topology_views'
+    name = "netbox_topology_views"
+    verbose_name = "Topology views"
+    description = "An plugin to render topology maps"
+    version = "3.0.1"
+    author = "Mattijs Vanhaverbeke"
+    author_email = "author@example.com"
+    base_url = "netbox_topology_views"
     required_settings = []
     default_settings = {
-        'preselected_device_roles': ['Firewall', 'Router', 'Distribution Switch', 'Core Switch', 'Internal Switch', 'Access Switch', 'Server', 'Storage', 'Backup', 'Wireless AP'],
-        'ignore_cable_type': [],
-        'device_img': ['access-switch', 'core-switch', 'firewall', 'router', 'distribution-switch', 'backup', 'storage', 'wan-network', 'wireless-ap', 'server', 'internal-switch', 'isp-cpe-material', 'non-racked-devices', 'power-units'],
-        'allow_coordinates_saving': False,
-        'always_save_coordinates': False,
-        'preselected_tags' : [],
-        'draw_default_layout': False
+        "preselected_device_roles": [
+            "Firewall",
+            "Router",
+            "Distribution Switch",
+            "Core Switch",
+            "Internal Switch",
+            "Access Switch",
+            "Server",
+            "Storage",
+            "Backup",
+            "Wireless AP",
+        ],
+        "ignore_cable_type": [],
+        "static_image_directory": "netbox_topology_views/img",
+        "allow_coordinates_saving": False,
+        "always_save_coordinates": False,
+        "preselected_tags": [],
+        "draw_default_layout": False,
     }
 
+
 config = TopologyViewsConfig