Migration from Esmith smarthosts to sqlite relayrules

[stephdl]

This pull request adds the import-module/50import_smarthosts action, which allows for importing smarthosts into the relayrules table.

NethServer/dev#6895

we want to migrate from NS7

/sbin/e-smith/db smarthosts printjson | jq
[
  {
    "props": {
      "TlsStatus": "enabled",
      "Password": "",
      "status": "enabled",
      "Username": "",
      "Port": "587",
      "Host": "smtp.domain.com"
    },
    "name": "@tata.com",
    "type": "recipient"
  },
  {
    "props": {
      "TlsStatus": "enabled",
      "Password": "",
      "status": "enabled",
      "Username": "",
      "Port": "587",
      "Host": "smtp.domain.com"
    },
    "name": "@toto.com",
    "type": "sender"
  },
  {
    "props": {
      "TlsStatus": "enabled",
      "Password": "",
      "status": "enabled",
      "Username": "",
      "Port": "587",
      "Host": "smtp.domain.com"
    },
    "name": "[email protected]",
    "type": "recipient"
  },
  {
    "props": {
      "TlsStatus": "enabled",
      "Password": "",
      "status": "enabled",
      "Username": "",
      "Port": "587",
      "Host": "smtp.domain.com"
    },
    "name": "[email protected]",
    "type": "sender"
  }
]

to NS8

[root@R1-pve ~]# api-cli run module/mail1/list-relay-rules | jq
Warning: using user "cluster" credentials from the environment
{
  "has_wildcard": false,
  "rules": [
    {
      "rule_type": "sender",
      "rule_subject": "[email protected]",
      "host": "smtp.domain.com",
      "port": 587,
      "tls": false,
      "username": "",
      "has_password": false,
      "enabled": true
    },
    {
      "rule_type": "sender",
      "rule_subject": "toto.com",
      "host": "smtp.domain.com",
      "port": 587,
      "tls": false,
      "username": "",
      "has_password": false,
      "enabled": true
    },
    {
      "rule_type": "recipient",
      "rule_subject": "[email protected]",
      "host": "smtp.domain.com",
      "port": 587,
      "tls": false,
      "username": "",
      "has_password": false,
      "enabled": true
    },
    {
      "rule_type": "recipient",
      "rule_subject": "tata.com",
      "host": "smtp.domain.com",
      "port": 587,
      "tls": false,
      "username": "",
      "has_password": false,
      "enabled": true
    }
  ]
}

[DavidePrincipi]

LGTM, please fix the log call and merge