Initial commit: Headscale management scripts and configuration

- Add headscale binary and configuration files
- Include management scripts for API keys, nodes, and authentication
- Add Docker setup with docker-compose
- Include backup and restore functionality
- Add example scripts for creating API keys and pre-auth keys

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

data/noise_private.key

@@ -0,0 +1 @@
+privkey:08a7dc8305baa74525b91b7d31a48dd8e91a13f812b732a7de4b4da8fef09d68