Added an information view to all data sources (#273)

app/MindWork AI Studio/Tools/FileInfoExtensions.cs

@@ -0,0 +1,17 @@
+namespace AIStudio.Tools;
+
+public static class FileInfoExtensions
+{
+    /// <summary>
+    /// Returns the file size in human-readable format.
+    /// </summary>
+    /// <param name="fileInfo">The file info object.</param>
+    /// <returns>The file size in human-readable format.</returns>
+    public static string FileSize(this FileInfo fileInfo)
+    {
+        if (!fileInfo.Exists)
+            return "N/A";
+
+        return fileInfo.Length.FileSize();
+    }
+}