Add an accommodations reservations module (#188)

Add a new module to enable accommodations reservation

![](https://gitea.communiquons.org/attachments/de1f5b12-0a93-40f8-b29d-97665daa6fd5)

Reviewed-on: #188

geneit_backend/migrations/2024-05-23-163128_accommodation_module/down.sql

@@ -0,0 +1,6 @@
+ALTER TABLE public.families
+    DROP COLUMN enable_accommodations;
+
+DROP TABLE IF EXISTS accommodations_reservations_cals_urls;
+DROP TABLE IF EXISTS accommodations_reservations;
+DROP TABLE IF EXISTS accommodations_list;