feature：增加两个设置界面跳转

lib/page/pb_setting.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+
+class PBSettingPage extends StatelessWidget {
+
+  static const routeName = '/setting/pb';
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('图床设置'),
+        centerTitle: true,
+      ),
+    );
+  }
+
+}

lib/page/picgo_setting.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+
+class PicGoSettingPage extends StatelessWidget {
+
+  static const routeName = '/setting/picgo';
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('PicGo设置'),
+        centerTitle: true,
+      ),
+    );
+  }
+
+}

lib/page/setting.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:package_info/package_info.dart';
 
+import '../route/route.dart';
+
 class SettingPage extends StatefulWidget {
   static const routeName = '/setting';
 
@@ -64,9 +66,15 @@ class _SettingPageState extends State<SettingPage> {
           // 菜单列表
           ListTile(
             title: Text('图床设置'),
+            onTap: () {
+              Navigator.pushNamed(context, PBSettingPagePath);
+            },
           ),
           ListTile(
             title: Text('PicGo设置'),
+            onTap: () {
+              Navigator.pushNamed(context, PicGoSettingPagePath);
+            },
           ),
         ],
       ),

lib/route/route.dart

@@ -3,13 +3,24 @@ import 'package:flutter/material.dart';
 import '../page/main_tabs.dart';
 import '../page/album.dart';
 import '../page/setting.dart';
+import '../page/pb_setting.dart';
+import '../page/picgo_setting.dart';
 
 final routes = {
   MainTabsPage.routeName: (BuildContext context) => MainTabsPage(),
   AlbumPage.routeName: (BuildContext context) => AlbumPage(),
   SettingPage.routeName: (BuildContext context) => SettingPage(),
+  PBSettingPage.routeName: (BuildContext context) => PBSettingPage(),
+  PicGoSettingPage.routeName: (BuildContext context) => PicGoSettingPage(),
 };
 
+// path map
+const MainTabsPagePath = MainTabsPage.routeName;
+const AlbumPagePath = AlbumPage.routeName;
+const SettingPagePath = SettingPage.routeName;
+const PBSettingPagePath = PBSettingPage.routeName;
+const PicGoSettingPagePath = PicGoSettingPage.routeName;
+
 /*
  * 实现命名路由传参
  */