[apps] Add tool call meta. (#14647)

- [x] Add resource_uri and other things to _meta to shortcut resource
lookup and speed things up.

codex-rs/core/tests/suite/plugins.rs

@@ -142,10 +142,6 @@ async fn build_apps_enabled_plugin_test_codex(
                 .features
                 .enable(Feature::Apps)
                 .expect("test config should allow feature update");
-            config
-                .features
-                .disable(Feature::AppsMcpGateway)
-                .expect("test config should allow feature update");
             config.chatgpt_base_url = chatgpt_base_url;
         });
     Ok(builder