Initial commit: Add NaaS (No as a Service) implementation

Add complete NaaS HTTP service implementation with:
- Pure Rust implementation using only standard library
- Multiple response formats (text, JSON, XML, YAML, boolean)
- Embedded web frontend with mobile-responsive design
- Container support with Podman/Docker
- Systemd service configuration
- Health check endpoint
- CORS support

The service always responds with "no" in various formats,
optimized for minimal binary size (~1MB) and fast response times.

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

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

Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "naas"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]
+
+[profile.release]
+opt-level = "z"
+lto = true
+codegen-units = 1
+strip = true
+panic = "abort"