Closes #14036: Move extras.plugins to netbox.plugins (#14086)

* Move extras.plugins to netbox.plugins & add deprecation warnings

* Move plugin template tags from extras to utilities

* Move plugins tests from extras to netbox

* Add TODO reminders for v4.0

netbox/extras/plugins/views.py

@@ -1,89 +1,7 @@
-from collections import OrderedDict
+import warnings
 
-from django.apps import apps
-from django.conf import settings
-from django.shortcuts import render
-from django.urls.exceptions import NoReverseMatch
-from django.views.generic import View
-from drf_spectacular.utils import extend_schema
-from rest_framework import permissions
-from rest_framework.response import Response
-from rest_framework.reverse import reverse
-from rest_framework.views import APIView
+from netbox.plugins.views import *
 
 
-class InstalledPluginsAdminView(View):
-    """
-    Admin view for listing all installed plugins
-    """
-    def get(self, request):
-        plugins = [apps.get_app_config(plugin) for plugin in settings.PLUGINS]
-        return render(request, 'extras/admin/plugins_list.html', {
-            'plugins': plugins,
-        })
-
-
-@extend_schema(exclude=True)
-class InstalledPluginsAPIView(APIView):
-    """
-    API view for listing all installed plugins
-    """
-    permission_classes = [permissions.IsAdminUser]
-    _ignore_model_permissions = True
-    schema = None
-
-    def get_view_name(self):
-        return "Installed Plugins"
-
-    @staticmethod
-    def _get_plugin_data(plugin_app_config):
-        return {
-            'name': plugin_app_config.verbose_name,
-            'package': plugin_app_config.name,
-            'author': plugin_app_config.author,
-            'author_email': plugin_app_config.author_email,
-            'description': plugin_app_config.description,
-            'version': plugin_app_config.version
-        }
-
-    def get(self, request, format=None):
-        return Response([self._get_plugin_data(apps.get_app_config(plugin)) for plugin in settings.PLUGINS])
-
-
-@extend_schema(exclude=True)
-class PluginsAPIRootView(APIView):
-    _ignore_model_permissions = True
-    schema = None
-
-    def get_view_name(self):
-        return "Plugins"
-
-    @staticmethod
-    def _get_plugin_entry(plugin, app_config, request, format):
-        # Check if the plugin specifies any API URLs
-        api_app_name = f'{app_config.name}-api'
-        try:
-            entry = (getattr(app_config, 'base_url', app_config.label), reverse(
-                f"plugins-api:{api_app_name}:api-root",
-                request=request,
-                format=format
-            ))
-        except NoReverseMatch:
-            # The plugin does not include an api-root url
-            entry = None
-
-        return entry
-
-    def get(self, request, format=None):
-
-        entries = []
-        for plugin in settings.PLUGINS:
-            app_config = apps.get_app_config(plugin)
-            entry = self._get_plugin_entry(plugin, app_config, request, format)
-            if entry is not None:
-                entries.append(entry)
-
-        return Response(OrderedDict((
-            ('installed-plugins', reverse('plugins-api:plugins-list', request=request, format=format)),
-            *entries
-        )))
+# TODO: Remove in v4.0
+warnings.warn(f"{__name__} is deprecated. Import from netbox.plugins instead.", DeprecationWarning)