Initial commit: DDNS service with NIC V2 protocol support

Features:
- Token-based subdomain claiming
- NIC V2 (DynDNS2) protocol implementation
- Technitium DNS integration
- Rate limiting (10 req/min IP, 1 req/min token)
- Web UI for space claiming
- Docker/Docker Compose support
- Compatible with UniFi, pfSense, EdgeRouter

Module: git.dws.rip/DWS/dyn

.env.example

@@ -0,0 +1,18 @@
+# Technitium DNS Configuration (Required)
+TECHNITIUM_URL=https://dns.dws.rip
+
+# Authentication - Use EITHER token OR username/password
+TECHNITIUM_TOKEN=your-api-token-here
+# TECHNITIUM_USERNAME=admin
+# TECHNITIUM_PASSWORD=your-password
+
+# Domain Configuration (Optional)
+BASE_DOMAIN=dws.rip
+SPACE_SUBDOMAIN=space
+
+# Rate Limiting (Optional)
+RATE_LIMIT_PER_IP=10
+RATE_LIMIT_PER_TOKEN=1
+
+# Network (Optional)
+TRUSTED_PROXIES=