Implement n8n-MCP integration

This commit adds a complete integration between n8n workflow automation and the Model Context Protocol (MCP):

Features:
- MCP server that exposes n8n workflows as tools, resources, and prompts
- Custom n8n node for connecting to MCP servers from workflows
- Bidirectional bridge for data format conversion
- Token-based authentication and credential management
- Comprehensive error handling and logging
- Full test coverage for core components

Infrastructure:
- TypeScript/Node.js project setup with proper build configuration
- Docker support with multi-stage builds
- Development and production docker-compose configurations
- Installation script for n8n custom node deployment

Documentation:
- Detailed README with usage examples and API reference
- Environment configuration templates
- Troubleshooting guide

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/mcp/resources.ts

@@ -0,0 +1,34 @@
+import { ResourceDefinition } from '../types';
+
+export const n8nResources: ResourceDefinition[] = [
+  {
+    uri: 'workflow://active',
+    name: 'Active Workflows',
+    description: 'List of all active workflows in n8n',
+    mimeType: 'application/json',
+  },
+  {
+    uri: 'workflow://all',
+    name: 'All Workflows',
+    description: 'List of all workflows in n8n',
+    mimeType: 'application/json',
+  },
+  {
+    uri: 'execution://recent',
+    name: 'Recent Executions',
+    description: 'Recent workflow execution history',
+    mimeType: 'application/json',
+  },
+  {
+    uri: 'credentials://types',
+    name: 'Credential Types',
+    description: 'Available credential types in n8n',
+    mimeType: 'application/json',
+  },
+  {
+    uri: 'nodes://available',
+    name: 'Available Nodes',
+    description: 'List of all available n8n nodes',
+    mimeType: 'application/json',
+  },
+];