Add Simplified Chinese translation for the panel (#1263)

* Add Simplified Chinese translation for the panel

* Update passwords.php

* The pterodactyl theme incomplete translation.Part 1.

* Deleteing pterodactyl theme translation.

resources/lang/cn/strings.php

@@ -0,0 +1,88 @@
+<?php
+
+return [
+    'email' => 'Email',
+    'user_identifier' => '用户名 或 Email',
+    'password' => '密码',
+    'confirm_password' => '确认密码',
+    'login' => '登陆',
+    'home' => '主页',
+    'servers' => '服务器',
+    'id' => 'ID',
+    'name' => '名称',
+    'node' => '节点',
+    'connection' => '连接',
+    'memory' => '内存',
+    'cpu' => 'CPU',
+    'status' => '状态',
+    'search' => '搜索',
+    'suspended' => '已暂停',
+    'account' => '用户',
+    'security' => '安全',
+    'ip' => 'IP 地址',
+    'last_activity' => '上次活动',
+    'revoke' => '吊销',
+    '2fa_token' => '认证密钥',
+    'submit' => '确认',
+    'close' => '关闭',
+    'settings' => '设置',
+    'configuration' => '配置',
+    'sftp' => 'SFTP',
+    'databases' => '数据库',
+    'memo' => 'Memo',
+    'created' => '已创建',
+    'expires' => '过期',
+    'public_key' => '令牌',
+    'api_access' => 'Api 访问',
+    'never' => '从未',
+    'sign_out' => '登出',
+    'admin_control' => '管理员面板',
+    'required' => '需要',
+    'port' => '端口',
+    'username' => '用户名',
+    'database' => '数据库',
+    'new' => '新',
+    'danger' => '危险',
+    'create' => '创建',
+    'select_all' => '全选',
+    'select_none' => '反选',
+    'alias' => '别名',
+    'primary' => '主要',
+    'make_primary' => '设置为主要',
+    'none' => '无',
+    'cancel' => '取消',
+    'created_at' => '创建于',
+    'action' => '操作',
+    'data' => '数据',
+    'queued' => '队列',
+    'last_run' => '上次运行',
+    'next_run' => '下次运行',
+    'not_run_yet' => '从未允许',
+    'yes' => '是',
+    'no' => '否',
+    'delete' => '删除',
+    '2fa' => '两步验证',
+    'logout' => '登出',
+    'admin_cp' => '管理员控制面板',
+    'optional' => '可选的',
+    'read_only' => '只读',
+    'relation' => '关系',
+    'owner' => '所有者',
+    'admin' => '管理员',
+    'subuser' => '子用户',
+    'captcha_invalid' => '输入的验证码错误.',
+    'tasks' => '任务',
+    'seconds' => '秒',
+    'minutes' => '分',
+    'under_maintenance' => '维护中',
+    'days' => [
+        'sun' => '周日',
+        'mon' => '周一',
+        'tues' => '周二',
+        'wed' => '周三',
+        'thurs' => '周四',
+        'fri' => '周五',
+        'sat' => '周六',
+    ],
+    'last_used' => '上次使用',
+];