模块化，添加webpack支持

hydro/development.js

@@ -9,12 +9,16 @@ process.stdin.on('data', async (input) => {
     }
 });
 
+global.Hydro = {};
+
 require('./lib/i18n');
 require('./utils');
 
 const bus = require('./service/bus');
+const loader = require('./lib/loader');
 
 async function run() {
+    await loader.prepare();
     await new Promise((resolve) => {
         const h = () => {
             console.log('Database connected');
@@ -27,16 +31,21 @@ async function run() {
     require('./service/gridfs');
     require('./service/queue');
     const server = require('./service/server');
-    require('./handler/home');
-    require('./handler/problem');
-    require('./handler/record');
-    require('./handler/judge');
-    require('./handler/user');
-    require('./handler/contest');
-    require('./handler/training');
-    require('./handler/discussion');
-    require('./handler/manage');
-    require('./handler/import');
+    const HandlerHome = require('./handler/home');
+    const HandlerProblem = require('./handler/problem');
+    const HandlerRecord = require('./handler/record');
+    const HandlerJudge = require('./handler/judge');
+    const HandlerUser = require('./handler/user');
+    const HandlerContest = require('./handler/contest');
+    const HandlerTraining = require('./handler/training');
+    const HandlerDiscussion = require('./handler/discussion');
+    const HandlerManage = require('./handler/manage');
+    const HandlerImport = require('./handler/import');
+    await loader.model();
+    await loader.handler();
+    HandlerContest.apply();
+    HandlerDiscussion.apply();
+    HandlerImport.apply();
     server.start();
 }
 run().catch((e) => {