Kmeshctl support for structured bpftool dumped map content

[LiZhenCheng9527]

Task description:
Now the contents of the map dumped by bpftool are unit32 or hexadecimal. We need to convert to get the information we need
So we want the kmeshctl tool to be able to present a structured view of what is in a Kmesh bpf map. So that it is easier to develop and locate problems.

{
        "key": {
            "": {
                "netns_cookie": 855700490,
                "addr": {
                    "": {
                        "ip4": 855700490,
                        "ip6": [855700490,0,0,0
                        ]
                    }
                }
            }
        },
        "value": 0

Solution:
kmeshctl <kmesh-pod-name> get map to get the bpf map created by kmesh.
`kmeshctl get to get structured map contents.
If anyone else has a better design they are able to, they can suggest it in the issue as well!

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[cr7258]

/assign