Add project files.

Core.Blueprint.External/GatewayConfigurations/GatewayConfiguration.cs

@@ -0,0 +1,17 @@
+namespace Core.Blueprint.External.GatewayConfigurations
+{
+    public record GatewayConfiguration
+    {
+        public GatewayConfiguration()
+        {
+            BlueprintService = new BlueprintServiceAPI();
+        }
+
+        public BlueprintServiceAPI BlueprintService { get; set; }
+    }
+    public record BlueprintServiceAPI
+    {
+        public string Channel { get; set; }
+        public BaseEndpoint Endpoint { get; set; }
+    }
+}