Added assistant plugins (#659)

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

@@ -0,0 +1,38 @@
+using AIStudio.Assistants.Dynamic;
+
+namespace AIStudio.Tools.PluginSystem.Assistants.DataModel;
+
+internal sealed class AssistantFileContentReader : StatefulAssistantComponentBase
+{
+    public override AssistantComponentType Type => AssistantComponentType.FILE_CONTENT_READER;
+    public override Dictionary<string, object> Props { get; set; } = new();
+    public override List<IAssistantComponent> Children { get; set; } = new();
+
+    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 Implementation of IStatefulAssistantComponent
+
+    public override void InitializeState(AssistantState state)
+    {
+        if (!state.FileContent.ContainsKey(this.Name))
+            state.FileContent[this.Name] = new FileContentState();
+    }
+
+    public override string UserPromptFallback(AssistantState state)
+    {
+        state.FileContent.TryGetValue(this.Name, out var fileState);
+        return this.BuildAuditPromptBlock(fileState?.Content);
+    }
+
+    #endregion
+}