docs: add notice about Google's official Maps MCP support

Added bilingual (Chinese/English) notice at the top of README to inform
users about Google's official Maps Grounding Lite MCP server announced
on December 10, 2025. Includes links to official resources and key features
while clarifying that this project remains actively maintained as a
community alternative.

Author: claude

README.md

@@ -6,6 +6,31 @@
 
 # MCP Google Map Server
 
+---
+
+> **📢 重要通知 | Important Notice**
+>
+> **Google 官方 MCP 支援已推出** | **Google Official MCP Support Available**
+>
+> Google 已於 2025 年 12 月 10 日宣布推出官方的 Google Maps MCP 服務（Maps Grounding Lite），提供 AI 代理程式存取可信賴的地理空間資料，包括地點資訊、天氣預報和路線規劃等功能。
+>
+> Google officially announced MCP support for Google Maps on December 10, 2025, introducing **Maps Grounding Lite** - a fully-managed MCP server that provides AI agents with access to trusted geospatial data, including place information, weather forecasts, and routing details.
+>
+> **官方資源 | Official Resources:**
+> - 📖 [Google Cloud 官方公告 | Official Announcement](https://cloud.google.com/blog/products/ai-machine-learning/announcing-official-mcp-support-for-google-services)
+> - 🛠️ [Google Maps Platform MCP Toolkit](https://developers.google.com/maps/ai/mcp)
+> - 📚 [入門教學 | Getting Started Tutorial](https://medium.com/google-cloud/tutorial-getting-started-with-google-mcp-services-60b23b22a0e7)
+>
+> **關鍵特點 | Key Features:**
+> - ✅ 完全託管的 HTTP 端點（無需本地代理）| Fully-managed HTTPS endpoints (no local proxy needed)
+> - ✅ 即時更新的地點與路線資訊 | Real-time place and routing information
+> - ✅ 企業級安全性與配額管理 | Enterprise security and quota management
+> - ✅ 目前為公開預覽版，預計於 2026 年初正式發布 | Currently in public preview, GA expected early 2026
+>
+> **本專案仍持續維護** | **This project remains actively maintained** as a community-driven alternative with different features and deployment options.
+
+---
+
 A powerful Model Context Protocol (MCP) server providing comprehensive Google Maps API integration with streamable HTTP transport support and LLM processing capabilities.
 
 ## 🙌 Special Thanks