feat(i18n): add Chinese (zh-CN) locale (#1244)

Author: Muska-Ami

layer/i18n/locales/zh-CN.json

@@ -0,0 +1,22 @@
+{
+  "common": {
+    "or": "或",
+    "error": {
+      "title": "页面未找到",
+      "description": "很抱歉，您访问的页面未找到。"
+    }
+  },
+  "docs": {
+    "copy": {
+      "page": "复制页面",
+      "link": "复制页面（Markdown）",
+      "view": "以 Markdown 格式查看",
+      "gpt": "在 ChatGPT 中打开",
+      "claude": "在 Claude 中打开"
+    },
+    "links": "社区",
+    "toc": "在此页面上",
+    "report": "提交问题报告",
+    "edit": "编辑此页面"
+  }
+}