improve plugin load

Pilz.Plugins/PluginLoadInfo.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Pilz.Plugins
+{
+    public class PluginLoadInfo<TPluginInterface, TPluginRuntimeInfo> where TPluginInterface : class where TPluginRuntimeInfo : PluginRuntimeInfo<TPluginInterface>
+    {
+        internal List<TPluginRuntimeInfo> PluginsInternal { get; } = [];
+        public Assembly Assembly { get; internal set; }
+        public PluginLoadStatus Status { get; internal set;  }
+        public IEnumerable<TPluginRuntimeInfo> Plugins => PluginsInternal.AsReadOnly();
+    }
+}