docs: auto generate pouch cli docs via code

Signed-off-by: pouchrobot <pouch-dev@list.alibaba-inc.com>

CONTRIBUTORS

@@ -74,6 +74,7 @@ root <starnop@163.com>
 Rudy Zhang <rudyflyzhang@gmail.com>
 Runrioter Wung <runrioter@gmail.com>
 Sam Xie <xsambundy@gmail.com>
+scy1993 <21851406@zju.edu.cn>
 SeaRise <846579815@qq.com>
 shaloulcy <lcy041536@gmail.com>
 shanbo.lkw <shanbo.lkw@alibaba-inc.com>