Support the replication of mysql user in full copy

[Dinosauria]

Description

Fail to support user in full copy.
Should we support users's migration to dest in full copy?

Output of ./dtle version:

Dtle 9.9.9.9 (git: master ea8483db80155ce736935029ff27c8362e677b02)

Additional details (log, config, job config etc):
job.json:

{
    "Name":"test1",
    "Failover":false,
    "Orders":[],
    "Type":"synchronous",
    "Tasks":[
        {
            "Type":"Src",
            "NodeId":"5ba63d5c-5aeb-1fb4-35c4-74f79dfc9dcc",
            "Config":{
                "Gtid":"",
                "SkipCreateDbTable":false,
                "ExpandSyntaxSupport":true,
                "DropTableIfExists":false,
                "ReplChanBufferSize":"600",
                "ChunkSize":"2000",
                "ApproveHeterogeneous":true,
                "ReplicateDoDb":[],
                "ConnectionConfig":{
                    "Host":"10.186.30.108",
                    "Port":"1111",
                    "User":"test",
                    "Password":"test"
                }
            }
        },
        {
            "Type":"Dest",
            "NodeId":"5ba63d5c-5aeb-1fb4-35c4-74f79dfc9dcc",
            "Config":{
                "SkipCreateDbTable":false,
                "DropTableIfExists":false,
                "ExpandSyntaxSupport":true,
                "ReplChanBufferSize":"600",
                "ApproveHeterogeneous":true,
                "ConnectionConfig":{
                    "Host":"10.186.30.144",
                    "Port":"2222",
                    "User":"test",
                    "Password":"test"
                }
            }
        }
    ]
}