Merge connections from providers into a single connection pool for the same host

[MythodeaLoL]

Currently, we cannot increase the processing power. One way to fix this would be to use multiple hosts from the same provider as if they were 1, that is, add the connections and have more processing.

For example, I can only use 50 Thunder connections, but I would like to use 150. If I configure 3 providers, nzbrefresh would add all the connections and treat the 3 identical hosts news.thundernews.com as just 1 provider.

Currently, if I add 3 identical hosts, it redundantly checks the same article on all 3, which makes no sense. @Tensai75

[
  {
    "Name": "Thunder",
    "Host": "news.thundernews.com",
    "Instances": [
      {
        "Username": "user1",
        "Password": "pass1",
        "MaxConns": 50
      },
      {
        "Username": "user2",
        "Password": "pass2",
        "MaxConns": 50
      }
    ],
    "Port": 119,
    "SSL": false,
    "SkipSslCheck": true,
    "ConnWaitTime": 10,
    "IdleTimeout": 30,
    "HealthCheck": false,
    "MaxTooManyConnsErrors": 3,
    "MaxConnErrors": 3
  }
]