Add ToolPipe: 145+ Free Developer Utility API Endpoints

## ToolPipe - Free Developer API Toolkit **URL:** https://toolpipe.dev **GitHub:** https://github.com/user/toolpipe (open source) **Docs:** https://toolpipe.dev/docs ### What it is ToolPipe provides 145+ free, no-signup-required API endpoints for common developer tasks: - **Text/String**: JSON formatter, Base64 encode/decode, hash generation (MD5/SHA256/SHA512), markdown to HTML, regex testing - **Media**: QR code generation, image resize/convert, PDF merge/split/compress/watermark - **Web**: URL shortener, DNS lookup, meta tag extraction, SSL checker, HTTP headers - **Data**: JSON to CSV, UUID generation, Lorem Ipsum, color conversion - **Security**: Password generator, JWT decode, CSP header analysis ### Why it fits All endpoints are free, require no API key for basic usage, and return clean JSON responses. Ideal for scripts, CI/CD pipelines, developer tools, and AI agent integrations. ### Example ```bash # Generate a QR code curl -X POST https://toolpipe.dev/qr/generate -H 'Content-Type: application/json' -d '{"data": "https://example.com"}' # DNS lookup curl 'https://toolpipe.dev/dns/lookup?domain=github.com' ```