Add Strix camera discovery system with comprehensive database

This commit adds the complete Strix IP camera stream discovery system:
- Go-based API server with SSE support for real-time updates
- 3,600+ camera brand database with stream URL patterns
- Intelligent fuzzy search across camera models
- ONVIF discovery and stream validation
- RESTful API with health check, camera search, and stream discovery
- Makefile for building and deployment
- Comprehensive README documentation

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

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

data/brands/provisual.json

@@ -0,0 +1,35 @@
+{
+  "brand": "Provisual",
+  "brand_id": "provisual",
+  "last_updated": "2025-10-17",
+  "source": "ispyconnect.com",
+  "entries": [
+    {
+      "models": [
+        "DH Series"
+      ],
+      "type": "JPEG",
+      "protocol": "http",
+      "port": 0,
+      "url": "cgi-bin/guest/Video.cgi?media=JPEG&channel=[CHANNEL]"
+    },
+    {
+      "models": [
+        "DH SERIES"
+      ],
+      "type": "JPEG",
+      "protocol": "http",
+      "port": 0,
+      "url": "cgi-bin/snapshot.cgi?loginuse=[USERNAME]&loginpas=[PASSWORD]"
+    },
+    {
+      "models": [
+        "Other"
+      ],
+      "type": "JPEG",
+      "protocol": "http",
+      "port": 0,
+      "url": "cgi-bin/net_jpeg.cgi?ch=[CHANNEL]"
+    }
+  ]
+}