Added assistant plugins (#659)

app/MindWork AI Studio/Tools/PluginSystem/Assistants/DataModel/AssistantWebContentReader.cs

@@ -0,0 +1,56 @@
+using AIStudio.Assistants.Dynamic;
+
+namespace AIStudio.Tools.PluginSystem.Assistants.DataModel;
+
+internal sealed class AssistantWebContentReader : StatefulAssistantComponentBase
+{
+    public override AssistantComponentType Type => AssistantComponentType.WEB_CONTENT_READER;
+    public override Dictionary<string, object> Props { get; set; } = new();
+    public override List<IAssistantComponent> Children { get; set; } = new();
+
+    public bool Preselect
+    {
+        get => this.Props.TryGetValue(nameof(this.Preselect), out var v) && v is true;
+        set => this.Props[nameof(this.Preselect)] = value;
+    }
+
+    public bool PreselectContentCleanerAgent
+    {
+        get => this.Props.TryGetValue(nameof(this.PreselectContentCleanerAgent), out var v) && v is true;
+        set => this.Props[nameof(this.PreselectContentCleanerAgent)] = value;
+    }
+
+    public string Class
+    {
+        get => AssistantComponentPropHelper.ReadString(this.Props, nameof(this.Class));
+        set => AssistantComponentPropHelper.WriteString(this.Props, nameof(this.Class), value);
+    }
+
+    public string Style
+    {
+        get => AssistantComponentPropHelper.ReadString(this.Props, nameof(this.Style));
+        set => AssistantComponentPropHelper.WriteString(this.Props, nameof(this.Style), value);
+    }
+
+    #region Implemention of StatefulAssistantComponent
+
+    public override void InitializeState(AssistantState state)
+    {
+        if (!state.WebContent.ContainsKey(this.Name))
+        {
+            state.WebContent[this.Name] = new WebContentState
+            {
+                Preselect = this.Preselect,
+                PreselectContentCleanerAgent = this.PreselectContentCleanerAgent,
+            };
+        }
+    }
+
+    public override string UserPromptFallback(AssistantState state)
+    {
+        state.WebContent.TryGetValue(this.Name, out var webState);
+        return this.BuildAuditPromptBlock(webState?.Content);
+    }
+
+    #endregion
+}