Added saving code blocks of every programming language (#1117)

app/MindWork AI Studio/Tools/FileExportFormat.cs

@@ -15,4 +15,10 @@ public enum FileExportFormat
     HTML,
     CSV,
     TSV,
+
+    /// <summary>
+    /// Code in any language, one code block of an answer. Its language says how the file is named,
+    /// see SourceCodeLanguage.
+    /// </summary>
+    SOURCE_CODE,
 }