Enhance the landing page and include the recent projects for faster opening

Examples/Nodify.Calculator/Models/RecentProjectEntry.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Nodify.Calculator.Models
+{
+    public class RecentProjectEntry
+    {
+        public int Id { get; set; }
+        public string ProjectName { get; set; } = string.Empty;
+        public string ProjectPath { get; set; } = string.Empty;
+        public DateTime LastOpened { get; set; } = DateTime.Now;
+    }
+}