feat: update sspanel model

[AutisticShark]

1. remove remaining SSR-related params.
2. node_connector has been replaced with node_speedlimit.
3. mu_only and is_multi_user are removed alongside SSR support, there is no way to use the origin shadowsocks node type with mu enabled, only the ss2022 type has mu support.
4. user email has been removed from WebAPI data since its refactor back in the 2021.9 release
5. OffsetPortUser, ServerSub, V2Port, TrojanPort, ForbiddenIP, and ForbiddenPort are never used and will soon be removed from WebAPI and custom config examples.
6. Vmess AlterID should always be 0 to enable the AEAD method.

[Septrum101]

8e3db77
@M1Screw I just make a reality config from web api. Could you test it?
The format of json should be

    "reality-opts": {
        "server_names": [
            "abc.com",
            "cdf.com"
        ],
        "private_key": "keykeykey",
        "min_client_ver": "1.1.1",
        "max_client_ver": "2.2.2",
        "max_time_diff": 30,
        "short_ids": [
            "321213123"
        ]
    }