Add mcp-safeguard: security linter for MCP server configurations

[SyedAnas01]

mcp-safeguard — Security scanner/linter for MCP (Model Context Protocol) server configurations.

https://github.com/SyedAnas01/mcp-safeguard

• Language: Python
• Category: Security / AI Security
• pip install mcp-safeguard && mcp-safeguard scan config.json
• Scans MCP tool definitions for prompt injection, credential leaks, tool poisoning
• 52 CVSS-scored detection rules
• CI integration: mcp-safeguard scan config.json --fail-on HIGH

First tool purpose-built for the MCP attack surface (OWASP 2026 classification).