begin developing a basic message based web api

Pilz.Networking/Api/IApiServer.cs

@@ -0,0 +1,7 @@
+namespace Pilz.Networking.Api;
+
+public interface IApiServer : IApiClient
+{
+    void RegisterHandler<T>(string url, T instance) where T : class;
+    void RegisterHandler(string url, Delegate handler);
+}