Add Nango MCP Server (#2719)

Add Nango MCP server to the list in the Readme

Author: rguldener

README.md

@@ -300,6 +300,7 @@ Official integrations are maintained by companies building production ready MCP
 - <img height="12" width="12" src="https://www.motherduck.com/favicon.ico" alt="MotherDuck Logo" /> **[MotherDuck](https://github.com/motherduckdb/mcp-server-motherduck)** - Query and analyze data with MotherDuck and local DuckDB
 - <img height="12" width="12" src="https://docs.mulesoft.com/_/img/favicon.ico" alt="Mulesoft Logo" /> **[Mulesoft](https://www.npmjs.com/package/@mulesoft/mcp-server)** - Build, deploy, and manage MuleSoft applications with natural language, directly inside any compatible IDE.
 - <img height="12" width="12" src="https://www.multiplayer.app/favicon-32x32.png" alt="Multiplayer Logo" /> **[Multiplayer](https://www.multiplayer.app/docs/ai/mcp-server)** - Analyze your full stack session recordings easily. Record a bug with Multiplayer, analyze and fix it with LLM
+- <img height="12" width="12" src="https://raw.githubusercontent.com/NangoHQ/nango/refs/heads/master/docs-v2/images/logo/logo-light-mode.svg" alt="Nango Logo" /> **[Nango](https://docs.nango.dev/guides/use-cases/mcp-server)** - Integrate your AI agent with 500+ APIs: Auth, custom tools, and observability. Open-source.
 - <img height="12" width="12" src="https://avatars.githubusercontent.com/u/38020270" alt="NanoVMs Logo" /> **[NanoVMs](https://github.com/nanovms/ops-mcp)** - Easily Build and Deploy unikernels to any cloud.
 - <img height="12" width="12" src="https://needle-ai.com/images/needle-logo-orange-2-rounded.png" alt="Needle AI Logo" /> **[Needle](https://github.com/needle-ai/needle-mcp)** - Production-ready RAG out of the box to search and retrieve data from your own documents.
 - <img height="12" width="12" src="https://neo4j.com/favicon.ico" alt="Neo4j Logo" /> **[Neo4j](https://github.com/neo4j-contrib/mcp-neo4j/)** - Neo4j graph database server (schema + read/write-cypher) and separate graph database backed memory