Added the BeyondFacts Lab as a prototype (#1175)

app/MindWork AI Studio/Assistants/BeyondFactsLab/BflProjectLoadStatus.cs

@@ -0,0 +1,22 @@
+namespace AIStudio.Assistants.BeyondFactsLab;
+
+/// <summary>
+/// Whether this version of AI Studio can open a stored preparation of the BeyondFacts Lab.
+/// </summary>
+public enum BflProjectLoadStatus
+{
+    /// <summary>
+    /// The preparation can be opened.
+    /// </summary>
+    AVAILABLE,
+
+    /// <summary>
+    /// A newer version of AI Studio stored the preparation. It stays as it is until that version opens it again.
+    /// </summary>
+    NEWER_VERSION,
+
+    /// <summary>
+    /// The preparation cannot be read, e.g., because its file is damaged. It stays as it is; nothing deletes it on its own.
+    /// </summary>
+    UNAVAILABLE,
+}