Restructure solution layout by module

src/Notify/__Libraries/StellaOps.Notify.Queue/NotifyQueueTransportKind.cs

@@ -0,0 +1,10 @@
+namespace StellaOps.Notify.Queue;
+
+/// <summary>
+/// Supported transports for the Notify event queue.
+/// </summary>
+public enum NotifyQueueTransportKind
+{
+    Redis,
+    Nats
+}