New commands that are potentially useful

[qiutongs]

What would you like to be added:

Some commands in Docker CLI may be also useful in crictl. I make a list here and see what people thinks about the usefulness. If you want to see a new command in crictl, please reply this issue and upvote for it.

Docker CLI	Description
diff	Inspect changes on a container's filesystem
events	Get real time events from the server
history	Show the history of an image
port	List port mappings or a specific mapping for the container
top	Display the running processes of a container
trust	Manage trust on Docker images
wait	Block until a container stops, then print its exit code

Why is this needed:

I made an analyze about the difference between docker cli and crictl. Some commands might be useful.

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/lifecycle stale

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/lifecycle rotten

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@fejta-bot: Closing this issue.

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