feat: add route propagation and bootstrap js gateway leaf services

src/NATS.Server/Gateways/GatewayManager.cs

@@ -0,0 +1,32 @@
+using Microsoft.Extensions.Logging;
+using NATS.Server.Configuration;
+
+namespace NATS.Server.Gateways;
+
+public sealed class GatewayManager : IAsyncDisposable
+{
+    private readonly GatewayOptions _options;
+    private readonly ServerStats _stats;
+    private readonly ILogger<GatewayManager> _logger;
+
+    public GatewayManager(GatewayOptions options, ServerStats stats, ILogger<GatewayManager> logger)
+    {
+        _options = options;
+        _stats = stats;
+        _logger = logger;
+    }
+
+    public Task StartAsync(CancellationToken ct)
+    {
+        _logger.LogDebug("Gateway manager started (name={Name}, listen={Host}:{Port})",
+            _options.Name, _options.Host, _options.Port);
+        Interlocked.Exchange(ref _stats.Gateways, 0);
+        return Task.CompletedTask;
+    }
+
+    public ValueTask DisposeAsync()
+    {
+        _logger.LogDebug("Gateway manager stopped");
+        return ValueTask.CompletedTask;
+    }
+}