[feature] pouch cli supports kill function

[lang710]

Why you need it?

We should implement 'pouch kill' to kill one or more running containers.

How it could be?

Example:
root@compatibility:~# pouch ps
Name ID Status Created Image Runtime
3bc260 3bc260 Up 10 minutes 4 seconds ago busybox:latest runc

root@compatibility:~# pouch kill 3bc260
3bc260

root@compatibility:~# pouch ps
Name ID Status Created Image Runtime

Other related information

Usage
pouch kill [OPTIONS] CONTAINER [CONTAINER...]

Options
Name, shorthand Default Description
--signal , -s KILL Signal to send to the container

Extended description
You can kill a container using the container’s ID, ID-prefix, or name.