feat: add jetstream stream lifecycle api

src/NATS.Server/JetStream/Api/JetStreamApiRouter.cs

@@ -1,7 +1,29 @@
+using NATS.Server.JetStream.Api.Handlers;
+
 namespace NATS.Server.JetStream.Api;
 
 public sealed class JetStreamApiRouter
 {
+    private readonly StreamManager _streamManager;
+
+    public JetStreamApiRouter()
+        : this(new StreamManager())
+    {
+    }
+
+    public JetStreamApiRouter(StreamManager streamManager)
+    {
+        _streamManager = streamManager;
+    }
+
     public JetStreamApiResponse Route(string subject, ReadOnlySpan<byte> payload)
-        => JetStreamApiResponse.NotFound(subject);
+    {
+        if (subject.StartsWith("$JS.API.STREAM.CREATE.", StringComparison.Ordinal))
+            return StreamApiHandlers.HandleCreate(subject, payload, _streamManager);
+
+        if (subject.StartsWith("$JS.API.STREAM.INFO.", StringComparison.Ordinal))
+            return StreamApiHandlers.HandleInfo(subject, _streamManager);
+
+        return JetStreamApiResponse.NotFound(subject);
+    }
 }