docs: add Clix MCP Server to Official Integrations (#2999)

Author: 0xHieu01

README.md

@@ -146,6 +146,7 @@ Official integrations are maintained by companies building production ready MCP
 - <img height="12" width="12" src="https://cleanupcrew.ai/favicon-light.png" alt="Cleanup Crew logo" /> **[Cleanup Crew](https://cleanupcrew.ai/install)** - Real-time human support service for non-technical founders using AI coding tools. When AI hits a wall, request instant human help directly from your IDE.
 - <img height="12" width="12" src="https://clickhouse.com/favicon.ico" alt="ClickHouse Logo" /> **[ClickHouse](https://github.com/ClickHouse/mcp-clickhouse)** - Query your [ClickHouse](https://clickhouse.com/) database server.
 - <img height="12" width="12" src="https://brand.clicksend.com/_ipx/s_794x608/img/clicksend_icon_only.svg" alt="ClickSend Logo" /> **[ClickSend](https://github.com/ClickSend/clicksend-mcp-server/)** - This is the official ClickSend MCP Server developed by ClickSend team.
+- <img height="12" width="12" src="https://avatars.githubusercontent.com/u/206176626?s=200&v=4" alt="Clix Logo" /> **[Clix MCP Server](https://github.com/clix-so/clix-mcp-server)** - Clix MCP Server that enables AI agents to provide real-time, trusted Clix documentation and SDK code examples for seamless integrations.
 - <img height="12" width="12" src="https://7463-tcb-advanced-a656fc-1257967285.tcb.qcloud.la/mcp/cloudbase-logo.svg" alt="CloudBase Logo" /> **[CloudBase](https://github.com/TencentCloudBase/CloudBase-AI-ToolKit)** - One-stop backend services for WeChat Mini-Programs and full-stack apps with serverless cloud functions and databases by [Tencent CloudBase](https://tcb.cloud.tencent.com/)
 - <img height="12" width="12" src="https://www.cloudbees.com/favicon.ico" alt="CloudBees Logo" /> **[CloudBees CI](https://docs.cloudbees.com/docs/cloudbees-ci-mcp-router/latest/)** - Enable AI access to your [CloudBees CI](https://www.cloudbees.com/capabilities/continuous-integration) cluster, the Enterprise-grade Jenkins®-based solution. 
 - <img height="12" width="12" src="https://www.cloudbees.com/favicon.ico" alt="CloudBees Logo" /> **[CloudBees Unify](https://docs.cloudbees.com/docs/cloudbees-unify-mcp-server/latest/install/mcp-server)** - Enable AI access to your [CloudBees Unify](https://www.cloudbees.com/unify) environment.