chore: Add Code Rabbit config file (#1251)

Changes from default.
- Disable the noisy status messages
- Disable generating docstrings and unit tests

.coderabbit.yaml

+# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+# yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json
+# Docs: https://docs.coderabbit.ai/getting-started/configure-coderabbit/
+language: "en-US"
+early_access: false
+reviews:
+  profile: "chill"
+  request_changes_workflow: false
+  high_level_summary: true
+  # John likes the poems, no messing
+  poem: true
+  review_status: false
+  collapse_walkthrough: false
+  auto_review:
+    enabled: true
+    drafts: false
+  finishing_touches:
+    docstrings:
+      enabled: false
+    unit_tests:
+      enabled: false
+chat:
+  auto_reply: true