Moved to System.Text.Json - Removed all Library dependencies - Implemented DeleteCommand

Models/FolderEntry.cs

@@ -1,6 +1,16 @@
+using System.Text.Json.Serialization;
+
 namespace TBDel.Models;
 
 // The same as FileEntry
 public class FolderEntry : FileEntry
 {
+    public FolderEntry() : base()
+    {
+    }
+
+    [JsonConstructor]
+    public FolderEntry(uint id, string path, DateTime dateAdded) : base(id, path, dateAdded)
+    {
+    }
 }