Add FastLink_Lite custom rules enhancement

- Add custom rules editor to LUCI web interface
- Support 32 rule types (DOMAIN, IP-CIDR, GEOSITE, etc.)
- Rule CRUD, sorting, batch import, templates
- netflow-rules script for mihomo config injection
- Standalone IPK repackaging support

src/init.d/netflow

@@ -0,0 +1,29 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+STOP=10
+USE_PROCD=1
+
+start_service() {
+    if [ ! -x "/usr/bin/netflow" ]; then
+        logger -t netflow "binary not found: /usr/bin/netflow"
+        return 1
+    fi
+
+    procd_open_instance
+    procd_set_param command /usr/bin/netflow
+    procd_set_param respawn ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5}
+    procd_set_param stdout 1
+    procd_set_param stderr 1
+    procd_close_instance
+
+    logger -t netflow "service started"
+}
+
+stop_service() {
+    logger -t netflow "service stopping"
+}
+
+service_triggers() {
+    procd_add_reload_trigger "netflow"
+}