minor: Add objectclass in user search response

src/ldap/op/search.rs

@@ -156,6 +156,13 @@ fn search_entry_from_user(user: &User, req_attrs: &[String]) -> LdapSearchResult
             "cn" | "mail" => Some(vec![user.mail.clone()]),
             // TODO: group membership
             "memberof" => Some(vec![]),
+            // Copied from lldap output, not sure if we want to add/remove some classes depending on context
+            "objectclass" => Some(
+                vec!["inetOrgPerson", "posixAccount", "mailAccount", "person"]
+                    .into_iter()
+                    .map(String::from)
+                    .collect(),
+            ),
             _ => {
                 tracing::warn!("Ignoring unknown attr in search query: {attr}");
                 None