move api docs to doxygen

docs/.vuepress/config.js

@@ -1,5 +1,3 @@
-const apiConfig = require('./api')
-
 module.exports = {
     title: '炸毛框架',
     description: '一个高性能聊天机器人 + Web 框架',
@@ -31,7 +29,7 @@ module.exports = {
             { text: '事件和注解', link: '/event/' },
             { text: '组件', link: '/component/' },
             { text: '进阶', link: '/advanced/' },
-            { text: 'API', link: '/api/' },
+            { text: 'API', link: '/doxy/' },
             { text: 'FAQ', link: '/faq/' },
             { text: '更新日志', link: '/update/v2/' },
             { text: '炸毛框架 v1', link: 'https://docs-v1.zhamao.xin/' }
@@ -164,7 +162,6 @@ module.exports = {
                     ]
                 },
             ],
-            '/api/': apiConfig,
             '/faq/': [
                 '',
                 'to-v2',