use depguard to prohibitate importing `github.com/golang/protobuf`

[hzxuzhonghu]

Task description:

github.com/golang/protobuf has been supseded by google.golang.org/protobuf, which means almost all the functions are equavaliently implemented there.

But in kmesh we are mixing import anyone of them. depguard provides a good way to set allowed importing packages. We can make use of it to not allow github.com/golang/protobuf

Solution:

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[hzxuzhonghu]

And "gopkg.in/yaml.v3" should not mix with sigs.k8s.io/yaml

[SpongeBob0318]

/assign

[SpongeBob0318]

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