Add test to trigger CI

Signed-off-by: dentiny <dentinyhao@gmail.com>

src/ray/stats/tests/BUILD

@@ -0,0 +1,10 @@
+load("//bazel:ray.bzl", "ray_cc_test")
+
+ray_cc_test(
+    name = "opentelemetry_metrics_test",
+    srcs = ["opentelemetry_metrics_test.cc"],
+    deps = [
+        "//:stats_opentelemetry",
+        "@com_google_googletest//:gtest_main",
+    ],
+)

src/ray/stats/tests/opentelemetry_metrics_test.cc

@@ -0,0 +1,16 @@
+// Copyright 2025 The Ray Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// TODO(hjiang): Just a dummy test used to trigger CI, replace with real implementation
+// later.