Release soon. Basic function has completed.

The basic function of this tool has complete:

- Manage SSH connections in groups.

- Group file format keep exactly the same with `~/.ssh/config`, which means you can use `ssh` command to connect to the server.

- If you edit a config in `~/.ssh/config` using this tool, all fields and custom comments will be preserved, even if they are not supported by this software.

- Default group use `/etc/ssh/ssh_config` as the default configuration file.

- Custome groups files will be stored in a self-defined directory.

- SSH connection can be tested its connectivity.

- SSH connection can be connected through `wezterm`, which is a terminal emulator and should be installed on your system.

- All function above are tested pass.

Next:

- Internationalization: support English, Chinese, French, Italian, German

- A simple auth system.