feat: add users and groups API routes

src/paperless/filters.py

@@ -0,0 +1,20 @@
+from django.contrib.auth.models import Group
+from django.contrib.auth.models import User
+from django_filters.rest_framework import FilterSet
+
+CHAR_KWARGS = ["istartswith", "iendswith", "icontains", "iexact"]
+ID_KWARGS = ["in", "exact"]
+INT_KWARGS = ["exact", "gt", "gte", "lt", "lte", "isnull"]
+DATE_KWARGS = ["year", "month", "day", "date__gt", "gt", "date__lt", "lt"]
+
+
+class UserFilterSet(FilterSet):
+    class Meta:
+        model = User
+        fields = {"username": CHAR_KWARGS}
+
+
+class GroupFilterSet(FilterSet):
+    class Meta:
+        model = Group
+        fields = {"name": CHAR_KWARGS}