refactor: #796 Make jihu const fields.

lib/core/default_project.dart

+class DefaultProject {
+
+  static const int projectId = 59853;
+  static const String name = "极狐 GitLab App";
+  static const String relativePath = "ultimate-plan/jihu-gitlab-app/jihu-gitlab-app";
+  static const int groupId = 88966;
+  static const String destinationHost = "https://jihulab.com";
+
+}

lib/modules/projects/starred/default_starred_page.dart

 import 'package:flutter/material.dart';
 import 'package:flutter_svg/svg.dart';
+import 'package:jihu_gitlab_app/core/default_project.dart';
 import 'package:jihu_gitlab_app/modules/projects/group_details/issues/project_issues_page.dart';
 
 class DefaultStarredPage extends StatefulWidget {
@@ -22,11 +23,11 @@ class _DefaultStarredPageState extends State<DefaultStarredPage> {
           itemBuilder: (context, index) => InkWell(
             onTap: () {
               final params = <String, dynamic>{
-                'projectId': 59893,
-                'name': "极狐 GitLab App",
-                'relativePath': 'ultimate-plan/jihu-gitlab-app/jihu-gitlab-app',
-                "groupId": 88966,
-                "destinationHost": "https://jihulab.com",
+                'projectId': DefaultProject.projectId,
+                'name': DefaultProject.name,
+                'relativePath': DefaultProject.relativePath,
+                "groupId": DefaultProject.groupId,
+                "destinationHost": DefaultProject.destinationHost,
               };
               Navigator.of(context).pushNamed(ProjectIssuesPage.routeName, arguments: params);
             },

lib/modules/root/default_starred_tab.dart

 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
+import 'package:jihu_gitlab_app/core/default_project.dart';
 import 'package:jihu_gitlab_app/modules/projects/group_and_project.dart';
 import 'package:jihu_gitlab_app/modules/projects/group_details/subgroups/subgroup_list_model.dart';
 import 'package:jihu_gitlab_app/modules/root/model/root_model.dart';
@@ -16,7 +17,15 @@ class DefaultStarredTab extends StatefulWidget {
 class _DefaultStarredTabState extends State<DefaultStarredTab> {
   @override
   Widget build(BuildContext context) {
-    var data = GroupAndProject(59893, 59893, "极狐 GitLab App", SubgroupItemType.project, "ultimate-plan/jihu-gitlab-app/jihu-gitlab-app", 88966, false);
+    var data = GroupAndProject(
+      DefaultProject.projectId,
+      DefaultProject.projectId,
+      DefaultProject.name,
+      SubgroupItemType.project,
+      DefaultProject.relativePath,
+      DefaultProject.groupId,
+      false,
+    );
     data.destinationHost = "https://jihulab.com";
     var rootStore = Provider.of<RootStore>(context, listen: true);
     return Padding(