feat(docs): add MCP Server documentation and configuration

- Add comprehensive MCP Server documentation page with setup instructions
- Include configuration guides for Claude Desktop, Cursor, and custom MCP clients
- Document all five available MCP tools: execute_php, execute_with_loader, get_execution_history, switch_connection, and get_php_info
- Add detailed examples for each connection type: local, Docker, SSH, Kubernetes, and Vapor
- Include troubleshooting section and common workflows
- Add MCP Server navigation link to VitePress config
- Add MCP server icon (mcp.svg) to public assets
- Update package-lock.json with dependency changes

Author: escapeboy

docs/.vitepress/config.mts

@@ -76,6 +76,7 @@ export default defineConfig({
       {text: 'Kubernetes', link: '/kubernetes'},
       {text: 'SSH', link: '/ssh'},
       {text: 'Vapor', link: '/vapor'},
+      {text: 'MCP Server', link: '/mcp-server'},
       {text: 'Client Library', link: '/client'},
       {text: 'Custom Loaders', link: '/custom-loaders'},
     ],