Add latest/last flag for nerdctl ps

[junnplus]

Add latest/last flag for nerdctl ps.

./nerdctl ps -a
CONTAINER ID    IMAGE                              COMMAND                   CREATED         STATUS     PORTS                     NAMES
29ae8a32d289    docker.io/library/mariadb:10.5     "docker-entrypoint.s…"    40 hours ago    Up                                   nerdctl_db_1
2be507bf4505    docker.io/library/nginx:alpine     "/docker-entrypoint.…"    11 hours ago    Unknown    127.0.0.1:8080->80/tcp    nginx
5916641ea7af    docker.io/library/wordpress:5.7    "docker-entrypoint.s…"    40 hours ago    Up         0.0.0.0:8080->80/tcp      nerdctl_wordpress_1

./nerdctl ps --latest
CONTAINER ID    IMAGE                             COMMAND                   CREATED         STATUS     PORTS                     NAMES
2be507bf4505    docker.io/library/nginx:alpine    "/docker-entrypoint.…"    11 hours ago    Unknown    127.0.0.1:8080->80/tcp    nginx

./nerdctl ps --last 2
CONTAINER ID    IMAGE                              COMMAND                   CREATED         STATUS     PORTS                     NAMES
2be507bf4505    docker.io/library/nginx:alpine     "/docker-entrypoint.…"    11 hours ago    Unknown    127.0.0.1:8080->80/tcp    nginx
5916641ea7af    docker.io/library/wordpress:5.7    "docker-entrypoint.s…"    40 hours ago    Up         0.0.0.0:8080->80/tcp      nerdctl_wordpress_1

[AkihiroSuda]

Please squash commits

[AkihiroSuda]

Thanks