Added the BeyondFacts Lab as a prototype (#1175)

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

@@ -0,0 +1,14 @@
+using System.Text.Json.Serialization;
+
+namespace AIStudio.Assistants.BeyondFactsLab;
+
+/// <summary>
+/// The contracts with which System.Text.Json reads and writes the files of the BeyondFacts Lab, built at compile time.
+/// </summary>
+[JsonSourceGenerationOptions(GenerationMode = JsonSourceGenerationMode.Metadata)]
+[JsonSerializable(typeof(BflProject))]
+[JsonSerializable(typeof(BflStepFormData))]
+
+// The preparation selected last:
+[JsonSerializable(typeof(Guid?))]
+internal sealed partial class BeyondFactsLabJsonContext : JsonSerializerContext;