feat:增加主题色模块

lib/layout/menu.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/material.dart';
+import 'package:food_hub_app/models/layout.dart';
+import 'package:food_hub_app/views/moment.dart';
+import 'package:food_hub_app/views/profile.dart';
+import 'package:food_hub_app/views/record.dart';
+import 'package:food_hub_app/views/stats.dart';
+
+final List<PageInfo> pages = [
+  PageInfo(
+    label: "记录",
+    icon: Icons.home_outlined,
+    activeIcon: Icons.home,
+    page: RecordPage(),
+  ),
+  PageInfo(
+    label: "统计",
+    icon: Icons.pie_chart_outline,
+    activeIcon: Icons.pie_chart,
+    page: StatsPage(),
+  ),
+  PageInfo(
+    label: "朋友圈",
+    icon: Icons.group_outlined,
+    activeIcon: Icons.group,
+    page: MomentPage(),
+  ),
+  PageInfo(
+    label: "我的",
+    icon: Icons.account_circle_outlined,
+    activeIcon: Icons.account_circle,
+    page: ProfilePage(),
+  ),
+];
+
+final List<BottomNavigationBarItem> bottomNavItems =
+    pages.map((page) {
+      return BottomNavigationBarItem(icon: Icon(page.icon), label: page.label);
+    }).toList();
+
+final List<Widget> tabPages = pages.map((item) => item.page).toList();