Dingbot

- 优化了配置文件的保存方案
> 现在强制保存在 `%HOME%/.dingbot/`文件夹下

- 取消了`_configure_manage`初始化时的可选项
> 现在由调用处定义

- 增强了跨平台的支持
- 优化了打包流程，修正了`dingbot`打包和安装时的错误
- 添加了`requirements.txt`文件，添加`requests`作为可选的支持库

This is the last release which dingbot and dingrobotpy have the same code.
Basic functions are still available.

less code and better experience

fix some bug in installing

fix some bug