Add configuration file read and write function

[Misite Bao]

1. Your usage scenarios? | 您使用的场景？

The project needs to store the user's initial settings locally, and read them at the next startup.

2. What is your expected outcome? | 您期望的结果是怎样的？

Use go to read and set configuration files, which can support common configuration file formats, such as json and toml, etc.