Add demo trading page, trader snapshot service and trading tables

Add trading_symbols, trading_analyses, trading_orders and trading_events.
The new trader service publishes account, position and open-order
snapshots of the Binance demo account to Redis every 3s. The /trading
page shows engine status, start/stop, balances, positions, the symbol
list with angle selection, open orders and the event timeline.

web/src/router/index.ts

@@ -6,6 +6,7 @@ export const menuRoutes = [
   { path: "/news", name: "news", component: () => import("@/pages/news/index.vue"), meta: { title: "新闻流" } },
   { path: "/crawler", name: "crawler", component: () => import("@/pages/crawler/index.vue"), meta: { title: "采集控制台" } },
   { path: "/market", name: "market", component: () => import("@/pages/market/index.vue"), meta: { title: "行情" } },
+  { path: "/trading", name: "trading", component: () => import("@/pages/trading/index.vue"), meta: { title: "模拟盘" } },
   { path: "/chat", name: "chat", component: () => import("@/pages/chat/index.vue"), meta: { title: "Chat" } },
   { path: "/skills", name: "skills", component: () => import("@/pages/skills/index.vue"), meta: { title: "Skills" } },
   { path: "/settings", name: "settings", component: () => import("@/pages/settings/index.vue"), meta: { title: "环境变量" } }