[PM-21075] Initial database seeder (#5703)

Adds a database seeder which can be used standalone using a CLI for seeding your local development environment, or used in unit tests to seed complex scenarios.

---------

Co-authored-by: Robert Y <rkac@bitwarden.com>

util/DbSeederUtility/Program.cs

@@ -0,0 +1,39 @@
+using Bit.Infrastructure.EntityFramework.Repositories;
+using Bit.Seeder.Recipes;
+using CommandDotNet;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Bit.DbSeederUtility;
+
+public class Program
+{
+    private static int Main(string[] args)
+    {
+        return new AppRunner<Program>()
+            .Run(args);
+    }
+
+    [Command("organization", Description = "Seed an organization and organization users")]
+    public void Organization(
+        [Option('n', "Name", Description = "Name of organization")]
+        string name,
+        [Option('u', "users", Description = "Number of users to generate")]
+        int users,
+        [Option('d', "domain", Description = "Email domain for users")]
+        string domain
+    )
+    {
+        // Create service provider with necessary services
+        var services = new ServiceCollection();
+        ServiceCollectionExtension.ConfigureServices(services);
+        var serviceProvider = services.BuildServiceProvider();
+
+        // Get a scoped DB context
+        using var scope = serviceProvider.CreateScope();
+        var scopedServices = scope.ServiceProvider;
+        var db = scopedServices.GetRequiredService<DatabaseContext>();
+
+        var recipe = new OrganizationWithUsersRecipe(db);
+        recipe.Seed(name, users, domain);
+    }
+}