feat: add new NatsOptions fields for Go config parity

Adds 10 new fields to NatsOptions (ClientAdvertise, TraceVerbose, MaxTracedMsgLen,
DisableSublistCache, ConnectErrorReports, ReconnectErrorReports, NoHeaderSupport,
MaxClosedClients, NoSystemAccount, SystemAccount) plus InCmdLine tracking set.
Moves MaxClosedClients from a private constant in NatsServer to a configurable option.

src/NATS.Server/NatsServer.cs

@@ -20,7 +20,6 @@ public sealed class NatsServer : IMessageRouter, ISubListAccess, IDisposable
     private readonly NatsOptions _options;
     private readonly ConcurrentDictionary<ulong, NatsClient> _clients = new();
     private readonly ConcurrentQueue<ClosedClient> _closedClients = new();
-    private const int MaxClosedClients = 10_000;
     private readonly ServerInfo _serverInfo;
     private readonly ILogger<NatsServer> _logger;
     private readonly ILoggerFactory _loggerFactory;
@@ -647,7 +646,7 @@ public sealed class NatsServer : IMessageRouter, ISubListAccess, IDisposable
         });
 
         // Cap closed clients list
-        while (_closedClients.Count > MaxClosedClients)
+        while (_closedClients.Count > _options.MaxClosedClients)
             _closedClients.TryDequeue(out _);
 
         var subList = client.Account?.SubList ?? _globalAccount.SubList;