Add ability to attach extra files to feedback (#12370)

Allow clients to provide extra files.

codex-rs/app-server-protocol/src/protocol/v2.rs

@@ -1506,6 +1506,8 @@ pub struct FeedbackUploadParams {
     #[ts(optional = nullable)]
     pub thread_id: Option<String>,
     pub include_logs: bool,
+    #[ts(optional = nullable)]
+    pub extra_log_files: Option<Vec<PathBuf>>,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]