seccomp: Add a case for checking arguments

[utam0k]

As the title says.

Part of #2724

Next, I'd like to make it abstract(e.g., SeccompRule) based on this PR.

[YJDoc2]

RSLGTM
I don't understand all of the changes here, but in general looks good, and experimental changes, so approving.

Also, I hope the async is only for the demo/example, I'd prefer the actual library code to not have any async in it if possible.

[utam0k]

Also, I hope the async is only for the demo/example, I'd prefer the actual library code to not have any async in it if possible.

Of course, I intend to use async/await in main.rs for seccomp notify.