feat(apps): add 9router application package

新增9Router应用，包含多版本部署配置、应用元数据和中英文说明文档，提供AI路由和Token节省功能，支持40+AI提供商与100+模型。

apps/9router/v0.4.18/docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  9router:
+    container_name: ${CONTAINER_NAME}
+    restart: always
+    networks:
+      - 1panel-network
+    ports:
+      - "${PANEL_APP_PORT_HTTP}:20128"
+    volumes:
+      - ./data:/app/data
+    environment:
+      - TZ=Asia/Shanghai
+      - DATA_DIR=/app/data
+      - PORT=20128
+      - HOSTNAME=0.0.0.0
+    image: decolua/9router:v0.4.18
+    labels:
+      createdBy: "Apps"
+networks:
+  1panel-network:
+    external: true