Implement deleting collections

src/api/core/mod.rs

@@ -68,6 +68,7 @@ pub fn routes() -> Vec<Route> {
         post_organization,
         post_organization_collections,
         post_organization_collection_update,
+        post_organization_collection_delete,
         post_collections_admin,
         get_org_details,
         get_org_users,