Initial commit of n8n MCP Server

A Model Context Protocol (MCP) server that integrates with n8n, providing tools for workflow and execution management via the n8n API.

docs/setup/index.md

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+# Setup and Configuration
+
+This section covers everything you need to know to set up and configure the n8n MCP Server.
+
+## Topics
+
+- [Installation](./installation.md): Instructions for installing the n8n MCP Server from npm or from source.
+- [Configuration](./configuration.md): Information on configuring the server, including environment variables and n8n API setup.
+- [Troubleshooting](./troubleshooting.md): Solutions to common issues you might encounter.
+
+## Quick Start
+
+For a quick start, follow these steps:
+
+1. Install the server: `npm install -g n8n-mcp-server`
+2. Create a `.env` file with your n8n API URL and API key
+3. Run the server: `n8n-mcp-server`
+4. Register the server with your AI assistant platform