fix(00_ProjectStructure): modified the details and formattings

01_IntroductionSessions/Session05/Projects/Library/Bookshelf.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MyLibrary
+{
+    public class Bookshelf
+    {
+        public int ShelfNumber { get; set; }
+        public List<Book> Books { get; set; } = new List<Book>();
+
+        public void AddBook(Book book)
+        {
+            Books.Add(book);
+        }
+    }
+}