Added preview feature configuration (#227)

app/MindWork AI Studio/Settings/DataModel/PreviewVisibilityExtensions.cs

@@ -0,0 +1,45 @@
+namespace AIStudio.Settings.DataModel;
+
+public static class PreviewVisibilityExtensions
+{
+    public static IList<PreviewFeatures> GetPreviewFeatures(this PreviewVisibility visibility)
+    {
+        var features = new List<PreviewFeatures>();
+        if (visibility >= PreviewVisibility.RELEASE_CANDIDATE)
+        {
+        }
+        
+        if (visibility >= PreviewVisibility.BETA)
+        {
+        }
+        
+        if (visibility >= PreviewVisibility.ALPHA)
+        {
+        }
+        
+        if (visibility >= PreviewVisibility.PROTOTYPE)
+        {
+            features.Add(PreviewFeatures.PRE_RAG_2024);
+        }
+        
+        if (visibility >= PreviewVisibility.EXPERIMENTAL)
+        {
+            features.Add(PreviewFeatures.PRE_WRITER_MODE_2024);
+        }
+        
+        return features;
+    }
+    
+    public static HashSet<PreviewFeatures> FilterPreviewFeatures(this PreviewVisibility visibility, HashSet<PreviewFeatures> enabledFeatures)
+    {
+        var filteredFeatures = new HashSet<PreviewFeatures>();
+        var previewFeatures = visibility.GetPreviewFeatures();
+        foreach (var feature in enabledFeatures)
+        {
+            if (previewFeatures.Contains(feature))
+                filteredFeatures.Add(feature);
+        }
+        
+        return filteredFeatures;
+    }
+}