Add cwd as an optional field to thread/list (#11651)

Add's the ability to filter app-server thread/list by cwd

codex-rs/debug-client/src/client.rs

@@ -180,6 +180,7 @@ impl AppServerClient {
                 model_providers: None,
                 source_kinds: None,
                 archived: None,
+                cwd: None,
             },
         };
         self.send(&request)?;