Support connecting to new networks (create network)

[clue]

This project current supports accessing networks that have already been created, accessing its messages, connecting and disconnecting and deleting this network.

In the future, we should also support creating a new network. Here's the protocol data dump using https://github.com/clue-labs/quassel-proxy:

Client -> Server
[
    2,
    "2createNetwork(NetworkInfo,QStringList)",
    {
        "UseSasl": false,
        "UseRandomServer": false,
        "UseAutoReconnect": true,
        "UseAutoIdentify": false,
        "UnlimitedReconnectRetries": false,
        "ServerList": [
        {
            "sslVersion": 0,
            "UseSSL": false,
            "UseProxy": false,
            "ProxyUser": null,
            "ProxyType": 1,
            "ProxyPort": 8080,
            "ProxyPass": null,
            "ProxyHost": "localhost",
            "Port": 6661,
            "Password": null,
            "Host": "irc.aniverse.com"
        }
        ],
        "SaslPassword": "",
        "SaslAccount": "",
        "RejoinChannels": true,
        "Perform": [
            ""
        ],
        "NetworkName": "Aniverse",
        "NetworkId": 4294967295,
        "Identity": 1,
        "CodecForServer": null,
        "CodecForEncoding": null,
        "CodecForDecoding": null,
        "AutoReconnectRetries": 20,
        "AutoReconnectInterval": 60,
        "AutoIdentifyService": "NickServ",
        "AutoIdentifyPassword": ""
    },
    []
]
Server -> Client
[
    2,
    "2networkCreated(NetworkId)",
    6
]

[clue]

Also consider supporting updating existing networks, e.g. changing a network address or renaming the network:

Client -> Server
[
    1,
    "Network",
    "1",
    "requestSetNetworkInfo",
    {
        "UseSasl": false,
        "UseRandomServer": false,
        "UseAutoReconnect": true,
        "UseAutoIdentify": true,
        "UnlimitedReconnectRetries": false,
        "ServerList": [
        {
            "sslVersion": 0,
            "UseSSL": true,
            "UseProxy": false,
            "ProxyUser": "",
            "ProxyType": 1,
            "ProxyPort": 8080,
            "ProxyPass": "",
            "ProxyHost": "localhost",
            "Port": 6697,
            "Password": "",
            "Host": "chat.freenode.net"
        }
        ],
        "SaslPassword": "",
        "SaslAccount": "",
        "RejoinChannels": true,
        "Perform": [
            ""
        ],
        "NetworkName": "freenode.net",
        "NetworkId": 1,
        "Identity": 1,
        "CodecForServer": null,
        "CodecForEncoding": null,
        "CodecForDecoding": null,
        "AutoReconnectRetries": 20,
        "AutoReconnectInterval": 60,
        "AutoIdentifyService": "NickServ",
        "AutoIdentifyPassword": "*snip*"
}
]
Server -> Client
[
    1,
    "Network",
    "1",
    "setNetworkName",
    "freenode.net"
]
Server -> Client
[
    1,
    "Network",
    "1",
    "setServerList",
    [
    {
        "sslVersion": 0,
        "UseSSL": true,
        "UseProxy": false,
        "ProxyUser": "",
        "ProxyType": 1,
        "ProxyPort": 8080,
        "ProxyPass": "",
        "ProxyHost": "localhost",
        "Port": 6697,
        "Password": "",
        "Host": "chat.freenode.net"
    }
    ]
]