add some default types to de-duplicate similar implmentations

Pilz.Net/Api/Client/BaseClient.cs

@@ -0,0 +1,30 @@
+using Pilz.Net.Api.Messages;
+using Pilz.Net.Data;
+
+namespace Pilz.Net.Api.Client;
+
+public abstract class BaseClient<T>(IApiClient client) : IBaseClient<T> where T : IDataObject
+{
+    public abstract string ApiEndpoint { get; }
+
+    public virtual async Task<T> Get(int id)
+    {
+        return (await client.SendRequest<GeneralItemMessages<T>.Item>($"{ApiEndpoint}/{id}", HttpMethod.Get)).EnsureOk().Item;
+    }
+
+    public virtual async Task Delete(int id)
+    {
+        (await client.SendRequest($"{ApiEndpoint}/{id}", HttpMethod.Delete)).EnsureOk();
+    }
+
+    public virtual async Task<T> Save(T item)
+    {
+        var generateNew = item.Id == 0;
+        return (await client.SendRequest<GeneralItemMessages<T>.Item>(
+            generateNew ? ApiEndpoint : $"{ApiEndpoint}/{item.Id}",
+            generateNew ? HttpMethod.Post : HttpMethod.Put,
+            GenerateUpdateMessage(item, generateNew))).EnsureOk().Item;
+    }
+
+    protected abstract ApiMessage GenerateUpdateMessage(T item, bool generateNew);
+}