g -v版本信息扩充

模仿`docker version`的版本信息，将`g -v`的输出格式变更为如下形式：
```shell
g version 1.5.0
Built:         2023-06-09 21:27:51
Git branch:    master
Git commit:    a655102b 
Go version:    go1.20.5
Os/Arch:       darwin/arm64
Experimental:  true
```