add code rabbit config

Author: yujonglee

.coderabbit.yaml

@@ -0,0 +1,15 @@
+# yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json
+language: "en-US"
+early_access: false
+reviews:
+  poem: false
+  high_level_summary: false
+  collapse_walkthrough: true
+  path_instructions:
+    - path: "**/*.{js,ts,tsx,rs}"
+      instructions: |
+        1. No error handling.
+        2. No unused imports, variables, or functions.
+        3. For comments, keep it minimal. It should be about "Why", not "What".
+chat:
+  auto_reply: false