feat: namespace team4 added

src/team4.cs

@@ -2,8 +2,11 @@ using System;
 using Microsoft.Data.Sqlite;
 using Database.Dto;
 
-public class Team4
+
+namespace Team4
 {
+    public class Team4
+    {
         public static List<BookDto> GetBooksByName(SqliteConnection conn, string name)
         {
             try
@@ -257,4 +260,5 @@ public class Team4
         {
             throw new NotImplementedException();
         }
+    }
 }