Clean up and organize using statements across files

Removed unused and redundant using/import statements from multiple files, including command, repository, and Program.cs. No functional changes; this commit improves code clarity and organization.

DbFirst.Infrastructure/Repositories/CatalogRepository.cs

@@ -1,17 +1,9 @@
-using Azure;
+using DbFirst.Domain;
 using DbFirst.Domain.Entities;
 using DbFirst.Domain.Repositories;
 using Microsoft.Data.SqlClient;
 using Microsoft.EntityFrameworkCore;
-using System;
-using System.Collections.Generic;
 using System.Data;
-using System.Diagnostics.Metrics;
-using System.Text;
-using System.Threading.Channels;
-using static Microsoft.EntityFrameworkCore.DbLoggerCategory;
-using static System.Runtime.InteropServices.JavaScript.JSType;
-using DbFirst.Domain;
 
 namespace DbFirst.Infrastructure.Repositories;