Add Frigate config merging and camera database updates

- Refactor Frigate generator to support adding cameras to existing configs
- Add text-based YAML parsing to preserve formatting and comments
- Implement duplicate camera/stream name detection and auto-numbering
- Add support for inserting cameras into existing go2rtc and cameras sections
- Update UI: add textarea for existing config input and generate button
- Preserve user's existing configuration when adding new cameras
- Add example config template for new users
- Update ConfigPanel to initialize Frigate tab instead of auto-generating
- Add FrigateGenerator import to main.js
- Add custom styles for Frigate config input and output sections
- Support both empty config (create from scratch) and existing config (merge) modes

Camera database updates:
- Add OpenIPC firmware camera support (257 models)
- Add Yi-Hack firmware variants (v4, v5, Allwinner, MStar)
- Add Fang-Hacks firmware support
- Add OpenMiko firmware support
- Update Sonoff camera models
- Update Thingino firmware camera models

data/brands/fang-hacks.json

@@ -0,0 +1,44 @@
+{
+  "brand": "fang-hacks",
+  "brand_id": "fang-hacks",
+  "last_updated": "2025-11-11",
+  "source": "github.com/samtap/fang-hacks",
+  "website": "https://github.com/samtap/fang-hacks",
+  "entries": [
+    {
+      "models": [
+        "XIAOFANG ARM PROCESSOR",
+        "XiaoFang ARM",
+        "Classic XiaoFang",
+        "ARM926EJ-S"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/unicast",
+      "notes": "Classic XiaoFang with ARM processor (not Ingenic)"
+    },
+    {
+      "models": [
+        "XIAOMI XIAOFANG",
+        "Xiaofang",
+        "XiaoFang"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/unicast",
+      "notes": "Xiaomi Xiaofang camera with fang-hacks"
+    },
+    {
+      "models": [
+        "Other"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/unicast",
+      "notes": "Generic fang-hacks installation"
+    }
+  ]
+}