Added file patterns and exclusions to folder data sources (#1057)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Tools/Services/DataSourceEmbeddingExcludedFolderGroup.cs

@@ -0,0 +1,10 @@
+namespace AIStudio.Tools.Services;
+
+/// <summary>
+/// Folders which the exclusion list of a local data source left out, summarized by name, e.g.,
+/// every folder named bin. The user sees whether the list caught a folder they wanted, such as
+/// a folder named Release which holds press releases.
+/// </summary>
+/// <param name="FolderName">The name of the folders.</param>
+/// <param name="FolderCount">How many folders of this name were left out.</param>
+public sealed record DataSourceEmbeddingExcludedFolderGroup(string FolderName, int FolderCount);