Feat: Make Jellyfin logs more configurable

[sleepy-nols]

Problem

As previously explained in issue #11438 :

Issues

• fail2ban does not work properly
• logrotate is unsupported
• logfile name cannot be fully customized

why should we fix?

• logrotate support yay
• fail2ban support yay
• standart logging without funky specials improves interoperability

Applying these changes like suggested in the issue sadly still puts the current date in front of .log

{
    "Serilog": {
        "WriteTo": [
            {
                "Name": "Console",
                "Args": {
                    "outputTemplate": "[{Timestamp:HH:mm:ss}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message:lj}{NewLine}{Exception}"
                }
            },
            {
                "Name": "Async",
                "Args": {
                    "configure": [
                        {
                            "Name": "File",
                            "Args": {
+                                "path": "%JELLYFIN_LOG_DIR%//log.log",
-                                "path": "%JELLYFIN_LOG_DIR%//log_.log",
-                                "rollingInterval": "Day",
-                                "retainedFileCountLimit": 3,
-                                "rollOnFileSizeLimit": true,
-                                "fileSizeLimitBytes": 100000000,
                                "outputTemplate": "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message}{NewLine}{Exception}"
                            }
                        }
                    ]
                }
            }
        ],
        "Enrich": [ "FromLogContext", "WithThreadId" ]
    }
}

Possible solutions:

• configure serilog to not append date or rotate

I will read into it more or maybe someone knows where to look.