add a simple plugin system

Pilz.Plugins.Advanced/PluginFunctionController.cs

@@ -0,0 +1,60 @@
+namespace Pilz.Plugins.Advanced
+{
+    public sealed class PluginFunctionController
+    {
+        public static PluginFunctionController Instance { get; private set; } = new();
+
+        private readonly List<PluginFunction> functions = new();
+
+        public IReadOnlyCollection<PluginFunction> Functions => functions.AsReadOnly();
+
+        public void RegisterFunction(PluginFunction function)
+        {
+            if (!functions.Contains(function))
+                functions.Add(function);
+        }
+
+        public void UnregisterFunction(PluginFunction function)
+        {
+            functions.Remove(function);
+        }
+
+        public IEnumerable<PluginFunction> GetFunctions(string functionType)
+        {
+            return functions.Where(n => n.Type == functionType);
+        }
+
+        public void ExecuteAll(string functionType)
+        {
+            foreach (var function in GetFunctions(functionType))
+                function.Execute();
+        }
+
+        public void ExecuteAll(string functionType, params object?[]? @params)
+        {
+            foreach (var function in GetFunctions(functionType))
+                function.Execute(@params);
+        }
+
+        public void ExecuteAll(string functionType, PluginFunctionParameter @params)
+        {
+            foreach (var function in GetFunctions(functionType))
+                function.Execute(@params);
+        }
+
+        public IEnumerable<object?> ExcuteAndGetResults(string functionType)
+        {
+            return GetFunctions(functionType).Select(n => n.Execute());
+        }
+
+        public IEnumerable<object?> ExcuteAndGetResults(string functionType, params object?[]? @params)
+        {
+            return GetFunctions(functionType).Select(n => n.Execute(@params));
+        }
+
+        public IEnumerable<object?> ExcuteAndGetResults(string functionType, PluginFunctionParameter @params)
+        {
+            return GetFunctions(functionType).Select(n => n.Execute(@params));
+        }
+    }
+}