ci: add CodeRabbit configuration file (#501)

* ci: add CodeRabbit configuration file

- Create .coderabbit.yaml file with specified settings
- Configure language, early access, and review preferences
- Enable auto-review for the 'main' branch
- Set up chat auto-reply

* fix

* fx

* debug

.coderabbit.yaml

@@ -0,0 +1,24 @@
+language: "zh-CN"
+early_access: false
+tone_instructions: "You must speak like a professional programmer, with precise and practical logic in every sentence. If possible, it would be best to include 'Why?', 'How?' and 'What effect?'."
+reviews:
+  profile: "chill"
+  request_changes_workflow: true
+  high_level_summary: true
+  auto_title_placeholder: "PR title"
+  commit_status: true
+  poem: true
+  review_status: true
+  collapse_walkthrough: true
+  auto_review:
+    enabled: true
+    drafts: false
+    base_branches: ["master"]
+  tools:
+    phpstan:
+      enabled: true
+      level: 5
+      paths: [ "tests" ]
+
+chat:
+  auto_reply: true