Feature: Add naive plugin support for pinry

pinry_plugins/batteries/plugin_example.py

@@ -0,0 +1,10 @@
+from core.models import Image
+from django_images.models import Thumbnail
+
+
+class Plugin:
+    def process_image_pre_creation(self, django_settings, image_instance: Image):
+        pass
+
+    def process_thumbnail_pre_creation(self, django_settings, thumbnail_instance: Thumbnail):
+        pass