add some default types to de-duplicate similar implmentations

Pilz.Net/Api/Client/IBaseClient.cs

@@ -0,0 +1,10 @@
+using Pilz.Net.Data;
+
+namespace Pilz.Net.Api.Client;
+
+public interface IBaseClient<T> where T : IDataObject
+{
+    Task Delete(int id);
+    Task<T> Get(int id);
+    Task<T> Save(T item);
+}